Some or all of the below information will be requested if it isn’t supplied; for fastest response please provide as much as you can. 
The Basics
- Nextcloud Server version (e.g., 31.0.8):
31.0.8
- Operating system and version (e.g., Ubuntu 24.04):
Linux 3.10.0-1160.119.1.el7.x86_64 x86_64
- PHP version (e.g, 8.3):
8.3
- Is this the first time you’ve seen this error? (Yes / No):
yes
- When did this problem seem to first start?
today
- Installation method (e.g. AlO, NCP, Bare Metal/Archive, etc.)
install.php
- Are you using CloudfIare, mod_security, or similar? (Yes / No)
rno
Summary of the issue you are facing:
Could not accept a share invitation
Steps to replicate it (hint: details matter!):
- on a share I chose to add it to my nextcloud
- on my nextcloud i get an error if i accept
Log entries
Nextcloud
Please provide the log entries from your Nextcloud log that are generated during the time of problem (via the Copy raw option from Administration settings->Logging screen or from your nextcloud.log located in your data directory). Feel free to use a pastebin/gist service if necessary.
{"reqId":"aKGaGkRznHdfLIEIGQYG0AAAABE","level":3,"time":"2025.08.17, 11:00:10","remoteAddr":"xxx.xxx.xxx.xx1","user":"cloud","app":"files_sharing","method":"POST","url":"/ocs/v2.php/apps/files_sharing/api/v1/remote_shares/pending/4","message":"Could not accept federated share with id: 4","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:141.0) Gecko/20100101 Firefox/141.0","version":"31.0.8.1","data":{"app":"files_sharing"}}
{"reqId":"aKGajiPV6@9guUJHyZA8uwAAAC8","level":2,"time":"2025.08.17, 11:02:06","remoteAddr":"xxx.xxx.xxx.xx2","user":"--","app":"PHP","method":"POST","url":"/ocm/shares","message":"openssl_verify(): Unknown digest algorithm at /home/httpd/vhosts/example1.com/http-cloud/lib/private/Security/Signature/Model/IncomingSignedRequest.php#249","userAgent":"Nextcloud Server Crawler","version":"31.0.8.1","data":{"app":"PHP"}}
{"reqId":"aKGajiPV6@9guUJHyZA8uwAAAC8","level":2,"time":"2025.08.17, 11:02:06","remoteAddr":"xxx.xxx.xxx.xx2","user":"--","app":"no app in context","method":"POST","url":"/ocm/shares","message":"signature could not be verified","userAgent":"Nextcloud Server Crawler","version":"31.0.8.1","exception":{"Exception":"NCU\\Security\\Signature\\Exceptions\\InvalidSignatureException","Message":"signature issue","Code":0,"Trace":[{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/Security/Signature/SignatureManager.php","line":157,"function":"verify","class":"OC\\Security\\Signature\\Model\\IncomingSignedRequest","type":"->","args":[]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/Security/Signature/SignatureManager.php","line":108,"function":"confirmIncomingRequestSignature","class":"OC\\Security\\Signature\\SignatureManager","type":"->","args":[{"__class__":"OC\\Security\\Signature\\Model\\IncomingSignedRequest"},{"__class__":"OC\\OCM\\OCMSignatoryManager"},259200]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/apps/cloud_federation_api/lib/Controller/RequestHandlerController.php","line":337,"function":"getIncomingSignedRequest","class":"OC\\Security\\Signature\\SignatureManager","type":"->","args":[{"__class__":"OC\\OCM\\OCMSignatoryManager"}]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/apps/cloud_federation_api/lib/Controller/RequestHandlerController.php","line":102,"function":"getSignedRequest","class":"OCA\\CloudFederationAPI\\Controller\\RequestHandlerController","type":"->","args":[]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/AppFramework/Http/Dispatcher.php","line":200,"function":"addShare","class":"OCA\\CloudFederationAPI\\Controller\\RequestHandlerController","type":"->","args":["cloud@https://speicher.example1.com","Kampagnen - Campagnes","",13607,"jonas.zuercher@example-share.com","jonas.zuercher","jonas.zuercher@example-share.com","jonas.zuercher",{"name":"webdav","options":{"sharedSecret":"bowxukGVddY97Hb","permissions":"{http://open-cloud-mesh.org/ns}share-permissions"}},"user","file"]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/AppFramework/Http/Dispatcher.php","line":114,"function":"executeController","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\CloudFederationAPI\\Controller\\RequestHandlerController"},"addShare"]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/AppFramework/App.php","line":161,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\CloudFederationAPI\\Controller\\RequestHandlerController"},"addShare"]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/Route/Router.php","line":315,"function":"main","class":"OC\\AppFramework\\App","type":"::","args":["OCA\\CloudFederationAPI\\Controller\\RequestHandlerController","addShare",{"__class__":"OC\\AppFramework\\DependencyInjection\\DIContainer"},{"_route":"cloud_federation_api.requesthandler.addshare"}]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/base.php","line":1061,"function":"match","class":"OC\\Route\\Router","type":"->","args":["/ocm/shares"]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/index.php","line":24,"function":"handleRequest","class":"OC","type":"::","args":[]}],"File":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/Security/Signature/Model/IncomingSignedRequest.php","Line":255,"message":"signature could not be verified","exception":{},"signedRequest":{"body":"{\"shareWith\":\"cloud@https:\\/\\/speicher.example1.com\",\"shareType\":\"user\",\"name\":\"Kampagnen - Campagnes\",\"resourceType\":\"file\",\"description\":\"\",\"providerId\":13607,\"owner\":\"jonas.zuercher@example-share.com\",\"ownerDisplayName\":\"jonas.zuercher\",\"sharedBy\":\"jonas.zuercher@example-share.com\",\"sharedByDisplayName\":\"jonas.zuercher\",\"protocol\":{\"name\":\"webdav\",\"options\":{\"sharedSecret\":\"bowxukGVddY97Hb\",\"permissions\":\"{http:\\/\\/open-cloud-mesh.org\\/ns}share-permissions\"}}}","digest":"SHA-512=Vh0yA2pJX9Rh+D8Pyk9UaddFhbAyE2i/nYvqjyQ80m5pRYBW2uPyfdynYElTvx+0qpTbWVhpJn1lH/kcQOx1MQ==","digestAlgorithm":"SHA-512","signingElements":{"keyId":"https://example-share.com/ocm#signature","algorithm":"rsa-sha512","headers":"(request-target) content-length date digest host","signature":"lZqTD4SaC5oZ3wSD8lleTB205ZxmZwHenzZlIN6LBOvV3/27YX1p+3IMtiS707pI0ZkgoFHm6RcszfnYG9t2qlECG+RMBJnFiyftTQkzFcTEE9OOoy75xDcK7GJPr/nDSmyWRaQcfIEnVQj9+9S5pdv/vSJ0Xsmej61vltRYGm5Q8qfitTPjgMdIxeYu2d9zP9ma+vLwDJ06S0krDc7wn1pcb63K3Lk5YV2z5DL/AgwnEXIJSoLX/VXAYIbdjpQxs3oZaLpP4qaN1StwW8Dxl01BMrERTiPVhlekt+DEUWY2Fc2g55+fbLcC6p3KfAKQ3glPuZi2bNL4Y/2TUNfjfQ=="},"signatureData":["(request-target): post /ocm/shares","content-length: 468","date: Sun, 17 Aug 2025 09:02:06 GMT","digest: SHA-512=Vh0yA2pJX9Rh+D8Pyk9UaddFhbAyE2i/nYvqjyQ80m5pRYBW2uPyfdynYElTvx+0qpTbWVhpJn1lH/kcQOx1MQ==","host: speicher.example1.com"],"signature":"lZqTD4SaC5oZ3wSD8lleTB205ZxmZwHenzZlIN6LBOvV3/27YX1p+3IMtiS707pI0ZkgoFHm6RcszfnYG9t2qlECG+RMBJnFiyftTQkzFcTEE9OOoy75xDcK7GJPr/nDSmyWRaQcfIEnVQj9+9S5pdv/vSJ0Xsmej61vltRYGm5Q8qfitTPjgMdIxeYu2d9zP9ma+vLwDJ06S0krDc7wn1pcb63K3Lk5YV2z5DL/AgwnEXIJSoLX/VXAYIbdjpQxs3oZaLpP4qaN1StwW8Dxl01BMrERTiPVhlekt+DEUWY2Fc2g55+fbLcC6p3KfAKQ3glPuZi2bNL4Y/2TUNfjfQ==","signatory":{"keyId":"https://example-share.com/ocm#signature","publicKeyPem":"-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAr/o6si7NG+SXkVYD7vSQ\nrTsRkjnSQKKX/mFmLHC3Wa9NDGm0peEUJs8zLaZxssY3gLECusw5jWWl6fRe2RO5\nrMKv2MYK/AyQq4NBXSC8F9uoKH4XUHE8DGWi99Ypa7dYWYMIMA8jR6VQgmRn22NK\nyy2BoGqgdq4x0/y3K4qj5bODhzBdrqTILqXLQD+rEI6OAGKfoP5jZU8866G/Q2Tx\nbhDx89JF4H9AhPYCUUCtA2hqD0puX4A49ltvymtaHxTbb7SjmbImfTZ/cRp3TfZC\nqQtcIGDDUSlGqC10JAmGbsmjIMym/UszUJ6A/zQwQ8g2qeS4KFU+QiJV7v6L/vvv\nDQIDAQAB\n-----END PUBLIC KEY-----\n"},"options":{"algorithm":"rsa-sha512","digestAlgorithm":"SHA-512","extraSignatureHeaders":[],"ttl":300,"dateHeader":"D, d M Y H:i:s T","ttlSignatory":259200,"bodyMaxSize":50000},"origin":"example-share.com"},"signatoryManager":"OC\\OCM\\OCMSignatoryManager","CustomMessage":"signature could not be verified"}}
{"reqId":"aKGajiPV6@9guUJHyZA8uwAAAC8","level":2,"time":"2025.08.17, 11:02:06","remoteAddr":"xxx.xxx.xxx.xx2","user":"--","app":"cloud_federation_api","method":"POST","url":"/ocm/shares","message":"wrongly signed request","userAgent":"Nextcloud Server Crawler","version":"31.0.8.1","exception":{"Exception":"NCU\\Security\\Signature\\Exceptions\\InvalidSignatureException","Message":"signature issue","Code":0,"Trace":[{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/Security/Signature/SignatureManager.php","line":157,"function":"verify","class":"OC\\Security\\Signature\\Model\\IncomingSignedRequest","type":"->","args":[]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/Security/Signature/SignatureManager.php","line":108,"function":"confirmIncomingRequestSignature","class":"OC\\Security\\Signature\\SignatureManager","type":"->","args":[{"__class__":"OC\\Security\\Signature\\Model\\IncomingSignedRequest"},{"__class__":"OC\\OCM\\OCMSignatoryManager"},259200]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/apps/cloud_federation_api/lib/Controller/RequestHandlerController.php","line":337,"function":"getIncomingSignedRequest","class":"OC\\Security\\Signature\\SignatureManager","type":"->","args":[{"__class__":"OC\\OCM\\OCMSignatoryManager"}]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/apps/cloud_federation_api/lib/Controller/RequestHandlerController.php","line":102,"function":"getSignedRequest","class":"OCA\\CloudFederationAPI\\Controller\\RequestHandlerController","type":"->","args":[]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/AppFramework/Http/Dispatcher.php","line":200,"function":"addShare","class":"OCA\\CloudFederationAPI\\Controller\\RequestHandlerController","type":"->","args":["cloud@https://speicher.example1.com","Kampagnen - Campagnes","",13607,"jonas.zuercher@example-share.com","jonas.zuercher","jonas.zuercher@example-share.com","jonas.zuercher",{"name":"webdav","options":{"sharedSecret":"bowxukGVddY97Hb","permissions":"{http://open-cloud-mesh.org/ns}share-permissions"}},"user","file"]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/AppFramework/Http/Dispatcher.php","line":114,"function":"executeController","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\CloudFederationAPI\\Controller\\RequestHandlerController"},"addShare"]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/AppFramework/App.php","line":161,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\CloudFederationAPI\\Controller\\RequestHandlerController"},"addShare"]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/Route/Router.php","line":315,"function":"main","class":"OC\\AppFramework\\App","type":"::","args":["OCA\\CloudFederationAPI\\Controller\\RequestHandlerController","addShare",{"__class__":"OC\\AppFramework\\DependencyInjection\\DIContainer"},{"_route":"cloud_federation_api.requesthandler.addshare"}]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/base.php","line":1061,"function":"match","class":"OC\\Route\\Router","type":"->","args":["/ocm/shares"]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/index.php","line":24,"function":"handleRequest","class":"OC","type":"::","args":[]}],"File":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/Security/Signature/Model/IncomingSignedRequest.php","Line":255,"message":"wrongly signed request","exception":{},"CustomMessage":"wrongly signed request"}}
{"reqId":"aKGajiPV6@9guUJHyZA8uwAAAC8","level":2,"time":"2025.08.17, 11:02:06","remoteAddr":"xxx.xxx.xxx.xx2","user":"--","app":"cloud_federation_api","method":"POST","url":"/ocm/shares","message":"incoming request exception","userAgent":"Nextcloud Server Crawler","version":"31.0.8.1","exception":{"Exception":"NCU\\Security\\Signature\\Exceptions\\IncomingRequestException","Message":"Invalid signature","Code":0,"Trace":[{"file":"/home/httpd/vhosts/example1.com/http-cloud/apps/cloud_federation_api/lib/Controller/RequestHandlerController.php","line":102,"function":"getSignedRequest","class":"OCA\\CloudFederationAPI\\Controller\\RequestHandlerController","type":"->","args":[]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/AppFramework/Http/Dispatcher.php","line":200,"function":"addShare","class":"OCA\\CloudFederationAPI\\Controller\\RequestHandlerController","type":"->","args":["cloud@https://speicher.example1.com","Kampagnen - Campagnes","",13607,"jonas.zuercher@example-share.com","jonas.zuercher","jonas.zuercher@example-share.com","jonas.zuercher",{"name":"webdav","options":{"sharedSecret":"bowxukGVddY97Hb","permissions":"{http://open-cloud-mesh.org/ns}share-permissions"}},"user","file"]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/AppFramework/Http/Dispatcher.php","line":114,"function":"executeController","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\CloudFederationAPI\\Controller\\RequestHandlerController"},"addShare"]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/AppFramework/App.php","line":161,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\CloudFederationAPI\\Controller\\RequestHandlerController"},"addShare"]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/Route/Router.php","line":315,"function":"main","class":"OC\\AppFramework\\App","type":"::","args":["OCA\\CloudFederationAPI\\Controller\\RequestHandlerController","addShare",{"__class__":"OC\\AppFramework\\DependencyInjection\\DIContainer"},{"_route":"cloud_federation_api.requesthandler.addshare"}]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/base.php","line":1061,"function":"match","class":"OC\\Route\\Router","type":"->","args":["/ocm/shares"]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/index.php","line":24,"function":"handleRequest","class":"OC","type":"::","args":[]}],"File":"/home/httpd/vhosts/example1.com/http-cloud/apps/cloud_federation_api/lib/Controller/RequestHandlerController.php","Line":351,"message":"incoming request exception","exception":{},"CustomMessage":"incoming request exception"}}
{"reqId":"aKGajkNMFph-aynPrsvgpQAAABo","level":2,"time":"2025.08.17, 11:02:07","remoteAddr":"xxx.xxx.xxx.xx2","user":"--","app":"PHP","method":"POST","url":"/ocs/v2.php/cloud/shares?format=json","message":"openssl_sign(): Unknown digest algorithm at /home/httpd/vhosts/example1.com/http-cloud/lib/private/Security/Signature/Model/OutgoingSignedRequest.php#177","userAgent":"Nextcloud Server Crawler","version":"31.0.8.1","data":{"app":"PHP"}}
{"reqId":"aKGajkNMFph-aynPrsvgpQAAABo","level":3,"time":"2025.08.17, 11:02:07","remoteAddr":"xxx.xxx.xxx.xx2","user":"--","app":"no app in context","method":"POST","url":"/ocs/v2.php/cloud/shares?format=json","message":"base64_encode(): Argument #1 ($string) must be of type string, null given in file '/home/httpd/vhosts/example1.com/http-cloud/lib/private/Security/Signature/Model/OutgoingSignedRequest.php' line 184","userAgent":"Nextcloud Server Crawler","version":"31.0.8.1","exception":{"Exception":"Exception","Message":"base64_encode(): Argument #1 ($string) must be of type string, null given in file '/home/httpd/vhosts/example1.com/http-cloud/lib/private/Security/Signature/Model/OutgoingSignedRequest.php' line 184","Code":0,"Trace":[{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/AppFramework/App.php","line":161,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\FederatedFileSharing\\Controller\\RequestHandlerController"},"createShare"]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/Route/Router.php","line":315,"function":"main","class":"OC\\AppFramework\\App","type":"::","args":["OCA\\FederatedFileSharing\\Controller\\RequestHandlerController","createShare",{"__class__":"OC\\AppFramework\\DependencyInjection\\DIContainer"},{"_route":"ocs.federatedfilesharing.requesthandler.createshare"}]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/ocs/v1.php","line":49,"function":"match","class":"OC\\Route\\Router","type":"->","args":["/ocsapp/cloud/shares"]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/ocs/v2.php","line":7,"args":["/home/httpd/vhosts/example1.com/http-cloud/ocs/v1.php"],"function":"require_once"}],"File":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/AppFramework/Http/Dispatcher.php","Line":146,"Previous":{"Exception":"TypeError","Message":"base64_encode(): Argument #1 ($string) must be of type string, null given","Code":0,"Trace":[{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/Security/Signature/Model/OutgoingSignedRequest.php","line":184,"function":"base64_encode","args":[null]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/Security/Signature/SignatureManager.php","line":208,"function":"sign","class":"OC\\Security\\Signature\\Model\\OutgoingSignedRequest","type":"->","args":[]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/Security/Signature/SignatureManager.php","line":231,"function":"getOutgoingSignedRequest","class":"OC\\Security\\Signature\\SignatureManager","type":"->","args":[{"__class__":"OC\\OCM\\OCMSignatoryManager"},"{\"notificationType\":\"SHARE_ACCEPTED\",\"resourceType\":\"file\",\"providerId\":\"13607\",\"notification\":{\"sharedSecret\":\"bowxukGVddY97Hb\",\"message\":\"Recipient accept the share\"}}","post","https://example-share.com/ocm/notifications"]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/Federation/CloudFederationProviderManager.php","line":236,"function":"signOutgoingRequestIClientPayload","class":"OC\\Security\\Signature\\SignatureManager","type":"->","args":[{"__class__":"OC\\OCM\\OCMSignatoryManager"},{"headers":{"content-type":"application/json"},"timeout":10,"connect_timeout":10,"verify":true,"body":"{\"notificationType\":\"SHARE_ACCEPTED\",\"resourceType\":\"file\",\"providerId\":\"13607\",\"notification\":{\"sharedSecret\":\"bowxukGVddY97Hb\",\"message\":\"Recipient accept the share\"}}"},"post","https://example-share.com/ocm/notifications"]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/Federation/CloudFederationProviderManager.php","line":218,"function":"prepareOcmPayload","class":"OC\\Federation\\CloudFederationProviderManager","type":"->","args":["https://example-share.com/ocm/notifications",{"headers":{"content-type":"application/json"},"timeout":10,"connect_timeout":10,"verify":true,"body":"{\"notificationType\":\"SHARE_ACCEPTED\",\"resourceType\":\"file\",\"providerId\":\"13607\",\"notification\":{\"sharedSecret\":\"bowxukGVddY97Hb\",\"message\":\"Recipient accept the share\"}}"}]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/Federation/CloudFederationProviderManager.php","line":161,"function":"postOcmPayload","class":"OC\\Federation\\CloudFederationProviderManager","type":"->","args":["*** sensitive parameters replaced ***","https://example-share.com/ocm/notifications","{\"notificationType\":\"SHARE_ACCEPTED\",\"resourceType\":\"file\",\"providerId\":\"13607\",\"notification\":{\"sharedSecret\":\"bowxukGVddY97Hb\",\"message\":\"Recipient accept the share\"}}"]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/apps/files_sharing/lib/External/Manager.php","line":529,"function":"sendNotification","class":"OC\\Federation\\CloudFederationProviderManager","type":"->","args":["*** sensitive parameters replaced ***",{"__class__":"OC\\Federation\\CloudFederationNotification"}]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/apps/files_sharing/lib/External/Manager.php","line":475,"function":"tryOCMEndPoint","class":"OCA\\Files_Sharing\\External\\Manager","type":"->","args":["*** sensitive parameters replaced ***","*** sensitive parameters replaced ***","13607","accept"]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/apps/files_sharing/lib/External/Manager.php","line":364,"function":"sendFeedbackToRemote","class":"OCA\\Files_Sharing\\External\\Manager","type":"->","args":["*** sensitive parameters replaced ***","*** sensitive parameters replaced ***","13607","accept"]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/apps/federatedfilesharing/lib/OCM/CloudFederationProviderFiles.php","line":181,"function":"acceptShare","class":"OCA\\Files_Sharing\\External\\Manager","type":"->","args":[5,"*** sensitive parameters replaced ***"]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/apps/federatedfilesharing/lib/Controller/RequestHandlerController.php","line":115,"function":"shareReceived","class":"OCA\\FederatedFileSharing\\OCM\\CloudFederationProviderFiles","type":"->","args":[{"__class__":"OC\\Federation\\CloudFederationShare"}]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/AppFramework/Http/Dispatcher.php","line":200,"function":"createShare","class":"OCA\\FederatedFileSharing\\Controller\\RequestHandlerController","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/AppFramework/Http/Dispatcher.php","line":114,"function":"executeController","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\FederatedFileSharing\\Controller\\RequestHandlerController"},"createShare"]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/AppFramework/App.php","line":161,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\FederatedFileSharing\\Controller\\RequestHandlerController"},"createShare"]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/Route/Router.php","line":315,"function":"main","class":"OC\\AppFramework\\App","type":"::","args":["OCA\\FederatedFileSharing\\Controller\\RequestHandlerController","createShare",{"__class__":"OC\\AppFramework\\DependencyInjection\\DIContainer"},{"_route":"ocs.federatedfilesharing.requesthandler.createshare"}]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/ocs/v1.php","line":49,"function":"match","class":"OC\\Route\\Router","type":"->","args":["/ocsapp/cloud/shares"]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/ocs/v2.php","line":7,"args":["/home/httpd/vhosts/example1.com/http-cloud/ocs/v1.php"],"function":"require_once"}],"File":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/Security/Signature/Model/OutgoingSignedRequest.php","Line":184},"message":"base64_encode(): Argument #1 ($string) must be of type string, null given in file '/home/httpd/vhosts/example1.com/http-cloud/lib/private/Security/Signature/Model/OutgoingSignedRequest.php' line 184","exception":{},"CustomMessage":"base64_encode(): Argument #1 ($string) must be of type string, null given in file '/home/httpd/vhosts/example1.com/http-cloud/lib/private/Security/Signature/Model/OutgoingSignedRequest.php' line 184"}}
{"reqId":"aKGak6VLpu@QMgFMpWNOnwAAAEM","level":2,"time":"2025.08.17, 11:02:12","remoteAddr":"xxx.xxx.xxx.xx1","user":"cloud","app":"PHP","method":"POST","url":"/ocs/v2.php/apps/files_sharing/api/v1/remote_shares/pending/5","message":"openssl_sign(): Unknown digest algorithm at /home/httpd/vhosts/example1.com/http-cloud/lib/private/Security/Signature/Model/OutgoingSignedRequest.php#177","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:141.0) Gecko/20100101 Firefox/141.0","version":"31.0.8.1","data":{"app":"PHP"}}
{"reqId":"aKGak6VLpu@QMgFMpWNOnwAAAEM","level":3,"time":"2025.08.17, 11:02:12","remoteAddr":"xxx.xxx.xxx.xx1","user":"cloud","app":"no app in context","method":"POST","url":"/ocs/v2.php/apps/files_sharing/api/v1/remote_shares/pending/5","message":"base64_encode(): Argument #1 ($string) must be of type string, null given in file '/home/httpd/vhosts/example1.com/http-cloud/lib/private/Security/Signature/Model/OutgoingSignedRequest.php' line 184","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:141.0) Gecko/20100101 Firefox/141.0","version":"31.0.8.1","exception":{"Exception":"Exception","Message":"base64_encode(): Argument #1 ($string) must be of type string, null given in file '/home/httpd/vhosts/example1.com/http-cloud/lib/private/Security/Signature/Model/OutgoingSignedRequest.php' line 184","Code":0,"Trace":[{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/AppFramework/App.php","line":161,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\Files_Sharing\\Controller\\RemoteController"},"acceptShare"]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/Route/Router.php","line":315,"function":"main","class":"OC\\AppFramework\\App","type":"::","args":["OCA\\Files_Sharing\\Controller\\RemoteController","acceptShare",{"__class__":"OC\\AppFramework\\DependencyInjection\\DIContainer"},{"id":"5","_route":"ocs.files_sharing.remote.acceptshare"}]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/ocs/v1.php","line":49,"function":"match","class":"OC\\Route\\Router","type":"->","args":["/ocsapp/apps/files_sharing/api/v1/remote_shares/pending/5"]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/ocs/v2.php","line":7,"args":["/home/httpd/vhosts/example1.com/http-cloud/ocs/v1.php"],"function":"require_once"}],"File":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/AppFramework/Http/Dispatcher.php","Line":146,"Previous":{"Exception":"TypeError","Message":"base64_encode(): Argument #1 ($string) must be of type string, null given","Code":0,"Trace":[{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/Security/Signature/Model/OutgoingSignedRequest.php","line":184,"function":"base64_encode","args":[null]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/Security/Signature/SignatureManager.php","line":208,"function":"sign","class":"OC\\Security\\Signature\\Model\\OutgoingSignedRequest","type":"->","args":[]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/Security/Signature/SignatureManager.php","line":231,"function":"getOutgoingSignedRequest","class":"OC\\Security\\Signature\\SignatureManager","type":"->","args":[{"__class__":"OC\\OCM\\OCMSignatoryManager"},"{\"notificationType\":\"SHARE_ACCEPTED\",\"resourceType\":\"file\",\"providerId\":\"13607\",\"notification\":{\"sharedSecret\":\"bowxukGVddY97Hb\",\"message\":\"Recipient accept the share\"}}","post","https://example-share.com/ocm/notifications"]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/Federation/CloudFederationProviderManager.php","line":236,"function":"signOutgoingRequestIClientPayload","class":"OC\\Security\\Signature\\SignatureManager","type":"->","args":[{"__class__":"OC\\OCM\\OCMSignatoryManager"},{"headers":{"content-type":"application/json"},"timeout":10,"connect_timeout":10,"verify":true,"body":"{\"notificationType\":\"SHARE_ACCEPTED\",\"resourceType\":\"file\",\"providerId\":\"13607\",\"notification\":{\"sharedSecret\":\"bowxukGVddY97Hb\",\"message\":\"Recipient accept the share\"}}"},"post","https://example-share.com/ocm/notifications"]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/Federation/CloudFederationProviderManager.php","line":218,"function":"prepareOcmPayload","class":"OC\\Federation\\CloudFederationProviderManager","type":"->","args":["https://example-share.com/ocm/notifications",{"headers":{"content-type":"application/json"},"timeout":10,"connect_timeout":10,"verify":true,"body":"{\"notificationType\":\"SHARE_ACCEPTED\",\"resourceType\":\"file\",\"providerId\":\"13607\",\"notification\":{\"sharedSecret\":\"bowxukGVddY97Hb\",\"message\":\"Recipient accept the share\"}}"}]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/Federation/CloudFederationProviderManager.php","line":161,"function":"postOcmPayload","class":"OC\\Federation\\CloudFederationProviderManager","type":"->","args":["https://example-share.com/","https://example-share.com/ocm/notifications","{\"notificationType\":\"SHARE_ACCEPTED\",\"resourceType\":\"file\",\"providerId\":\"13607\",\"notification\":{\"sharedSecret\":\"bowxukGVddY97Hb\",\"message\":\"Recipient accept the share\"}}"]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/apps/files_sharing/lib/External/Manager.php","line":529,"function":"sendNotification","class":"OC\\Federation\\CloudFederationProviderManager","type":"->","args":["https://example-share.com/",{"__class__":"OC\\Federation\\CloudFederationNotification"}]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/apps/files_sharing/lib/External/Manager.php","line":475,"function":"tryOCMEndPoint","class":"OCA\\Files_Sharing\\External\\Manager","type":"->","args":["https://example-share.com/","bowxukGVddY97Hb","13607","accept"]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/apps/files_sharing/lib/External/Manager.php","line":364,"function":"sendFeedbackToRemote","class":"OCA\\Files_Sharing\\External\\Manager","type":"->","args":["https://example-share.com/","bowxukGVddY97Hb","13607","accept"]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/apps/files_sharing/lib/Controller/RemoteController.php","line":64,"function":"acceptShare","class":"OCA\\Files_Sharing\\External\\Manager","type":"->","args":[5]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/AppFramework/Http/Dispatcher.php","line":200,"function":"acceptShare","class":"OCA\\Files_Sharing\\Controller\\RemoteController","type":"->","args":[5]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/AppFramework/Http/Dispatcher.php","line":114,"function":"executeController","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\Files_Sharing\\Controller\\RemoteController"},"acceptShare"]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/AppFramework/App.php","line":161,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\Files_Sharing\\Controller\\RemoteController"},"acceptShare"]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/Route/Router.php","line":315,"function":"main","class":"OC\\AppFramework\\App","type":"::","args":["OCA\\Files_Sharing\\Controller\\RemoteController","acceptShare",{"__class__":"OC\\AppFramework\\DependencyInjection\\DIContainer"},{"id":"5","_route":"ocs.files_sharing.remote.acceptshare"}]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/ocs/v1.php","line":49,"function":"match","class":"OC\\Route\\Router","type":"->","args":["/ocsapp/apps/files_sharing/api/v1/remote_shares/pending/5"]},{"file":"/home/httpd/vhosts/example1.com/http-cloud/ocs/v2.php","line":7,"args":["/home/httpd/vhosts/example1.com/http-cloud/ocs/v1.php"],"function":"require_once"}],"File":"/home/httpd/vhosts/example1.com/http-cloud/lib/private/Security/Signature/Model/OutgoingSignedRequest.php","Line":184},"message":"base64_encode(): Argument #1 ($string) must be of type string, null given in file '/home/httpd/vhosts/example1.com/http-cloud/lib/private/Security/Signature/Model/OutgoingSignedRequest.php' line 184","exception":{},"CustomMessage":"base64_encode(): Argument #1 ($string) must be of type string, null given in file '/home/httpd/vhosts/example1.com/http-cloud/lib/private/Security/Signature/Model/OutgoingSignedRequest.php' line 184"}}
Configuration
Nextcloud
The output of occ config:list system or similar is best, but, if not possible, the contents of your config.php file from /path/to/nextcloud is fine (make sure to remove any identifiable information!):
{
"system": {
"instanceid": "***REMOVED SENSITIVE VALUE***",
"passwordsalt": "***REMOVED SENSITIVE VALUE***",
"secret": "***REMOVED SENSITIVE VALUE***",
"trusted_domains": [
"***REMOVED SENSITIVE VALUE***",
"***REMOVED SENSITIVE VALUE***"
],
"datadirectory": "***REMOVED SENSITIVE VALUE***",
"overwrite.cli.url": "***REMOVED SENSITIVE VALUE***",
"htaccess.RewriteBase": "\/",
"logfile": "\/home\/httpd\/vhosts\/***REMOVED SENSITIVE VALUE***\/data\/nextcloud.log",
"loglevel": 2,
"logtimezone": "Europe\/Berlin",
"dbtype": "mysql",
"version": "31.0.8.1",
"dbname": "***REMOVED SENSITIVE VALUE***",
"dbhost": "***REMOVED SENSITIVE VALUE***",
"dbport": "",
"dbtableprefix": "oc_",
"mysql.utf8mb4": true,
"dbuser": "***REMOVED SENSITIVE VALUE***",
"dbpassword": "***REMOVED SENSITIVE VALUE***",
"installed": true,
"maintenance": false,
"default_phone_region": "CH",
"logdateformat": "Y.m.d, H:i:s",
"default_language": "de",
"default_locale": "de_CH",
"syslog_tag": "***REMOVED SENSITIVE VALUE***",
"mail_smtpmode": "smtp",
"mail_smtpauthtype": "LOGIN",
"mail_sendmailmode": "smtp",
"mail_smtpsecure": "ssl",
"mail_smtpauth": 1,
"mail_from_address": "***REMOVED SENSITIVE VALUE***",
"mail_domain": "***REMOVED SENSITIVE VALUE***",
"mail_smtpname": "***REMOVED SENSITIVE VALUE***",
"mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
"mail_smtphost": "***REMOVED SENSITIVE VALUE***",
"mail_smtpport": "465",
"theme": "",
"reference_opengraph": false,
"updater.release.channel": "stable",
"app_install_overwrite": [
"piwik",
"richdocuments",
"csp_editor"
],
"memories.exiftool_no_local": true,
"memories.vod.path": "\/http-cloud\/apps\/memories\/bin-ext\/go-vod-amd64",
"memories.db.triggers.fcu": true,
"maintenance_window_start": 1
}
}