Cannot access, edit, or create external storage

ℹ️ Support
1

Nextcloud version (eg, 20.0.5): 21.0.3
Operating system and version (eg, Ubuntu 20.04): Ubuntu 20.04.2 LTS x86_64
Apache or nginx version (eg, Apache 2.4.25): nginx/1.18.0 (Ubuntu)
PHP version (eg, 7.4): replace me

The issue you are facing:
I lost access to the local external storage 12 days ago. The files are on the drive and I can navigate to them on the server. The nextcloud instance reads 0MB in the storage and last modified 12 days ago. In the Settings>External Storage panel the options to edit or create external storage are greyed out. There is no dropdown for backends, etc. When I first visit the external storage settings page there is no indicator by my storage device. When I click the check mark then I get a red “!” to the left of the storage, when I click the “!” it changes to a green checkmark.

Is this the first time you’ve seen this error? (Y/N): Y

Steps to replicate it:

  1. open nextcloud files
  2. see that there is no data in the external drive
  3. go to settings external drive
  4. see that the external drive I set up is greyed out
  5. click the check mark
  6. see a “!” appear
  7. click the “!”
  8. see a check mark appear
  9. still no data in external storage

The output of your Nextcloud log in Admin > Logging:

{"reqId":"SRV2kM3DBbAhnmsGMnTN","level":3,"time":"2021-07-12T16:55:58+00:00","remoteAddr":"166.62.236.50","user":"ken","app":"index","method":"GET","url":"/apps/integration_twitter/avatar?userId=8736882","message":{"Exception":"GuzzleHttp\\Exception\\ServerException","Message":"Server error: `GET https://pbs.twimg.com/profile_images/742385672682512384/VfTAuqLg_normal.jpg` resulted in a `502 Bad Gateway` response","Code":502,"Trace":[{"file":"/usr/share/nginx/nextcloud/3rdparty/guzzlehttp/guzzle/src/Middleware.php","line":69,"function":"create","class":"GuzzleHttp\\Exception\\RequestException","type":"::"},{"file":"/usr/share/nginx/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php","line":204,"function":"GuzzleHttp\\{closure}","class":"GuzzleHttp\\Middleware","type":"::","args":["*** sensitive parameters replaced ***"]},{"file":"/usr/share/nginx/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php","line":153,"function":"callHandler","class":"GuzzleHttp\\Promise\\Promise","type":"::"},{"file":"/usr/share/nginx/nextcloud/3rdparty/guzzlehttp/promises/src/TaskQueue.php","line":48,"function":"GuzzleHttp\\Promise\\{closure}","class":"GuzzleHttp\\Promise\\Promise","type":"::","args":["*** sensitive parameters replaced ***"]},{"file":"/usr/share/nginx/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php","line":248,"function":"run","class":"GuzzleHttp\\Promise\\TaskQueue","type":"->"},{"file":"/usr/share/nginx/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php","line":224,"function":"invokeWaitFn","class":"GuzzleHttp\\Promise\\Promise","type":"->"},{"file":"/usr/share/nginx/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php","line":269,"function":"waitIfPending","class":"GuzzleHttp\\Promise\\Promise","type":"->"},{"file":"/usr/share/nginx/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php","line":226,"function":"invokeWaitList","class":"GuzzleHttp\\Promise\\Promise","type":"->"},{"file":"/usr/share/nginx/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php","line":62,"function":"waitIfPending","class":"GuzzleHttp\\Promise\\Promise","type":"->"},{"file":"/usr/share/nginx/nextcloud/3rdparty/guzzlehttp/guzzle/src/Client.php","line":187,"function":"wait","class":"GuzzleHttp\\Promise\\Promise","type":"->"},{"file":"/usr/share/nginx/nextcloud/lib/private/Http/Client/Client.php","line":236,"function":"request","class":"GuzzleHttp\\Client","type":"->"},{"file":"/usr/share/nginx/nextcloud/apps/integration_twitter/lib/Service/TwitterAPIService.php","line":62,"function":"get","class":"OC\\Http\\Client\\Client","type":"->"},{"file":"/usr/share/nginx/nextcloud/apps/integration_twitter/lib/Controller/TwitterAPIController.php","line":124,"function":"getAvatar","class":"OCA\\Twitter\\Service\\TwitterAPIService","type":"->"},{"file":"/usr/share/nginx/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":218,"function":"getAvatar","class":"OCA\\Twitter\\Controller\\TwitterAPIController","type":"->"},{"file":"/usr/share/nginx/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":127,"function":"executeController","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->"},{"file":"/usr/share/nginx/nextcloud/lib/private/AppFramework/App.php","line":157,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->"},{"file":"/usr/share/nginx/nextcloud/lib/private/Route/Router.php","line":302,"function":"main","class":"OC\\AppFramework\\App","type":"::"},{"file":"/usr/share/nginx/nextcloud/lib/base.php","line":993,"function":"match","class":"OC\\Route\\Router","type":"->"},{"file":"/usr/share/nginx/nextcloud/index.php","line":37,"function":"handleRequest","class":"OC","type":"::"}],"File":"/usr/share/nginx/nextcloud/3rdparty/guzzlehttp/guzzle/src/Exception/RequestException.php","Line":113,"CustomMessage":"--"},"userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:89.0) Gecko/20100101 Firefox/89.0","version":"21.0.3.1"}
{"reqId":"w7wgchs361JEMV7xwNHx","level":3,"time":"2021-07-12T17:19:36+00:00","remoteAddr":"166.62.236.50","user":"Dannielle","app":"no app in context","method":"PUT","url":"/remote.php/dav/uploads/Dannielle/a2ba9071ff30ab2049cbd3f002136dc1/0000000000000000-0000000010239999","message":{"Exception":"Sabre\\DAV\\Exception\\BadRequest","Message":"Expected filesize of 10240000 bytes but read (from Nextcloud client) and wrote (to Nextcloud storage) 6094848 bytes. Could either be a network problem on the sending side or a problem writing to the storage on the server side.","Code":0,"Trace":[{"file":"/usr/share/nginx/nextcloud/apps/dav/lib/Connector/Sabre/Directory.php","line":156,"function":"put","class":"OCA\\DAV\\Connector\\Sabre\\File","type":"->"},{"file":"/usr/share/nginx/nextcloud/apps/dav/lib/Upload/UploadFolder.php","line":46,"function":"createFile","class":"OCA\\DAV\\Connector\\Sabre\\Directory","type":"->"},{"file":"/usr/share/nginx/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php","line":1098,"function":"createFile","class":"OCA\\DAV\\Upload\\UploadFolder","type":"->"},{"file":"/usr/share/nginx/nextcloud/3rdparty/sabre/dav/lib/DAV/CorePlugin.php","line":504,"function":"createFile","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/usr/share/nginx/nextcloud/3rdparty/sabre/event/lib/WildcardEmitterTrait.php","line":89,"function":"httpPut","class":"Sabre\\DAV\\CorePlugin","type":"->"},{"file":"/usr/share/nginx/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php","line":472,"function":"emit","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/usr/share/nginx/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php","line":253,"function":"invokeMethod","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/usr/share/nginx/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php","line":321,"function":"start","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/usr/share/nginx/nextcloud/apps/dav/lib/Server.php","line":332,"function":"exec","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/usr/share/nginx/nextcloud/apps/dav/appinfo/v2/remote.php","line":35,"function":"exec","class":"OCA\\DAV\\Server","type":"->"},{"file":"/usr/share/nginx/nextcloud/remote.php","line":167,"args":["/usr/share/nginx/nextcloud/apps/dav/appinfo/v2/remote.php"],"function":"require_once"}],"File":"/usr/share/nginx/nextcloud/apps/dav/lib/Connector/Sabre/File.php","Line":246,"CustomMessage":"--"},"userAgent":"Mozilla/5.0 (Android) Nextcloud-android/3.14.1","version":"21.0.3.1"}
{"reqId":"ijBZZ6ugh1Ra8B2R2RMS","level":3,"time":"2021-07-12T21:17:05+00:00","remoteAddr":"166.62.236.50","user":"ken","app":"index","method":"GET","url":"/apps/integration_twitter/avatar?userId=17484680","message":{"Exception":"GuzzleHttp\\Exception\\ServerException","Message":"Server error: `GET https://pbs.twimg.com/profile_images/1209802752819261440/jvir-xNm_normal.jpg` resulted in a `502 Bad Gateway` response","Code":502,"Trace":[{"file":"/usr/share/nginx/nextcloud/3rdparty/guzzlehttp/guzzle/src/Middleware.php","line":69,"function":"create","class":"GuzzleHttp\\Exception\\RequestException","type":"::"},{"file":"/usr/share/nginx/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php","line":204,"function":"GuzzleHttp\\{closure}","class":"GuzzleHttp\\Middleware","type":"::","args":["*** sensitive parameters replaced ***"]},{"file":"/usr/share/nginx/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php","line":153,"function":"callHandler","class":"GuzzleHttp\\Promise\\Promise","type":"::"},{"file":"/usr/share/nginx/nextcloud/3rdparty/guzzlehttp/promises/src/TaskQueue.php","line":48,"function":"GuzzleHttp\\Promise\\{closure}","class":"GuzzleHttp\\Promise\\Promise","type":"::","args":["*** sensitive parameters replaced ***"]},{"file":"/usr/share/nginx/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php","line":248,"function":"run","class":"GuzzleHttp\\Promise\\TaskQueue","type":"->"},{"file":"/usr/share/nginx/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php","line":224,"function":"invokeWaitFn","class":"GuzzleHttp\\Promise\\Promise","type":"->"},{"file":"/usr/share/nginx/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php","line":269,"function":"waitIfPending","class":"GuzzleHttp\\Promise\\Promise","type":"->"},{"file":"/usr/share/nginx/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php","line":226,"function":"invokeWaitList","class":"GuzzleHttp\\Promise\\Promise","type":"->"},{"file":"/usr/share/nginx/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php","line":62,"function":"waitIfPending","class":"GuzzleHttp\\Promise\\Promise","type":"->"},{"file":"/usr/share/nginx/nextcloud/3rdparty/guzzlehttp/guzzle/src/Client.php","line":187,"function":"wait","class":"GuzzleHttp\\Promise\\Promise","type":"->"},{"file":"/usr/share/nginx/nextcloud/lib/private/Http/Client/Client.php","line":236,"function":"request","class":"GuzzleHttp\\Client","type":"->"},{"file":"/usr/share/nginx/nextcloud/apps/integration_twitter/lib/Service/TwitterAPIService.php","line":62,"function":"get","class":"OC\\Http\\Client\\Client","type":"->"},{"file":"/usr/share/nginx/nextcloud/apps/integration_twitter/lib/Controller/TwitterAPIController.php","line":124,"function":"getAvatar","class":"OCA\\Twitter\\Service\\TwitterAPIService","type":"->"},{"file":"/usr/share/nginx/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":218,"function":"getAvatar","class":"OCA\\Twitter\\Controller\\TwitterAPIController","type":"->"},{"file":"/usr/share/nginx/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":127,"function":"executeController","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->"},{"file":"/usr/share/nginx/nextcloud/lib/private/AppFramework/App.php","line":157,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->"},{"file":"/usr/share/nginx/nextcloud/lib/private/Route/Router.php","line":302,"function":"main","class":"OC\\AppFramework\\App","type":"::"},{"file":"/usr/share/nginx/nextcloud/lib/base.php","line":993,"function":"match","class":"OC\\Route\\Router","type":"->"},{"file":"/usr/share/nginx/nextcloud/index.php","line":37,"function":"handleRequest","class":"OC","type":"::"}],"File":"/usr/share/nginx/nextcloud/3rdparty/guzzlehttp/guzzle/src/Exception/RequestException.php","Line":113,"CustomMessage":"--"},"userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:89.0) Gecko/20100101 Firefox/89.0","version":"21.0.3.1"}
{"reqId":"ggueBrdzBYo5z86NMPlC","level":3,"time":"2021-07-13T18:33:56+00:00","remoteAddr":"166.62.236.50","user":"ken","app":"index","method":"GET","url":"/apps/integration_twitter/avatar?userId=17484680","message":{"Exception":"GuzzleHttp\\Exception\\ServerException","Message":"Server error: `GET https://pbs.twimg.com/profile_images/1209802752819261440/jvir-xNm_normal.jpg` resulted in a `502 Bad Gateway` response","Code":502,"Trace":[{"file":"/usr/share/nginx/nextcloud/3rdparty/guzzlehttp/guzzle/src/Middleware.php","line":69,"function":"create","class":"GuzzleHttp\\Exception\\RequestException","type":"::"},{"file":"/usr/share/nginx/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php","line":204,"function":"GuzzleHttp\\{closure}","class":"GuzzleHttp\\Middleware","type":"::","args":["*** sensitive parameters replaced ***"]},{"file":"/usr/share/nginx/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php","line":153,"function":"callHandler","class":"GuzzleHttp\\Promise\\Promise","type":"::"},{"file":"/usr/share/nginx/nextcloud/3rdparty/guzzlehttp/promises/src/TaskQueue.php","line":48,"function":"GuzzleHttp\\Promise\\{closure}","class":"GuzzleHttp\\Promise\\Promise","type":"::","args":["*** sensitive parameters replaced ***"]},{"file":"/usr/share/nginx/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php","line":248,"function":"run","class":"GuzzleHttp\\Promise\\TaskQueue","type":"->"},{"file":"/usr/share/nginx/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php","line":224,"function":"invokeWaitFn","class":"GuzzleHttp\\Promise\\Promise","type":"->"},{"file":"/usr/share/nginx/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php","line":269,"function":"waitIfPending","class":"GuzzleHttp\\Promise\\Promise","type":"->"},{"file":"/usr/share/nginx/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php","line":226,"function":"invokeWaitList","class":"GuzzleHttp\\Promise\\Promise","type":"->"},{"file":"/usr/share/nginx/nextcloud/3rdparty/guzzlehttp/promises/src/Promise.php","line":62,"function":"waitIfPending","class":"GuzzleHttp\\Promise\\Promise","type":"->"},{"file":"/usr/share/nginx/nextcloud/3rdparty/guzzlehttp/guzzle/src/Client.php","line":187,"function":"wait","class":"GuzzleHttp\\Promise\\Promise","type":"->"},{"file":"/usr/share/nginx/nextcloud/lib/private/Http/Client/Client.php","line":236,"function":"request","class":"GuzzleHttp\\Client","type":"->"},{"file":"/usr/share/nginx/nextcloud/apps/integration_twitter/lib/Service/TwitterAPIService.php","line":62,"function":"get","class":"OC\\Http\\Client\\Client","type":"->"},{"file":"/usr/share/nginx/nextcloud/apps/integration_twitter/lib/Controller/TwitterAPIController.php","line":124,"function":"getAvatar","class":"OCA\\Twitter\\Service\\TwitterAPIService","type":"->"},{"file":"/usr/share/nginx/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":218,"function":"getAvatar","class":"OCA\\Twitter\\Controller\\TwitterAPIController","type":"->"},{"file":"/usr/share/nginx/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":127,"function":"executeController","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->"},{"file":"/usr/share/nginx/nextcloud/lib/private/AppFramework/App.php","line":157,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->"},{"file":"/usr/share/nginx/nextcloud/lib/private/Route/Router.php","line":302,"function":"main","class":"OC\\AppFramework\\App","type":"::"},{"file":"/usr/share/nginx/nextcloud/lib/base.php","line":993,"function":"match","class":"OC\\Route\\Router","type":"->"},{"file":"/usr/share/nginx/nextcloud/index.php","line":37,"function":"handleRequest","class":"OC","type":"::"}],"File":"/usr/share/nginx/nextcloud/3rdparty/guzzlehttp/guzzle/src/Exception/RequestException.php","Line":113,"CustomMessage":"--"},"userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:89.0) Gecko/20100101 Firefox/89.0","version":"21.0.3.1"}
{"reqId":"EMOzITiVKkti7QOLIMp2","level":4,"time":"2021-07-15T14:16:22+00:00","remoteAddr":"166.62.236.50","user":"ken","app":"webdav","method":"PROPFIND","url":"/remote.php/dav/files/ken/GameSaves/BaldursGate","message":{"Exception":"Sabre\\DAV\\Exception\\ServiceUnavailable","Message":"System is in maintenance mode.","Code":0,"Trace":[{"file":"/usr/share/nginx/nextcloud/3rdparty/sabre/event/lib/WildcardEmitterTrait.php","line":89,"function":"checkMaintenanceMode","class":"OCA\\DAV\\Connector\\Sabre\\MaintenancePlugin","type":"->"},{"file":"/usr/share/nginx/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php","line":456,"function":"emit","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/usr/share/nginx/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php","line":253,"function":"invokeMethod","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/usr/share/nginx/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php","line":321,"function":"start","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/usr/share/nginx/nextcloud/apps/dav/lib/Server.php","line":332,"function":"exec","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/usr/share/nginx/nextcloud/apps/dav/appinfo/v2/remote.php","line":35,"function":"exec","class":"OCA\\DAV\\Server","type":"->"},{"file":"/usr/share/nginx/nextcloud/remote.php","line":167,"args":["/usr/share/nginx/nextcloud/apps/dav/appinfo/v2/remote.php"],"function":"require_once"}],"File":"/usr/share/nginx/nextcloud/apps/dav/lib/Connector/Sabre/MaintenancePlugin.php","Line":85,"CustomMessage":"--"},"userAgent":"Mozilla/5.0 (Linux) mirall/3.2.4git (build 6464) (Nextcloud, pop-5.11.0-7620-generic ClientArchitecture: x86_64 OsArchitecture: x86_64)","version":"21.0.3.1"}
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{"reqId":"PdppD5mpHXmE16FvE5tZ","level":4,"time":"2021-07-15T14:16:24+00:00","remoteAddr":"166.62.236.50","user":"ken","app":"webdav","method":"PROPFIND","url":"/remote.php/dav/files/ken/GameSaves/DragonAgeOrigins","message":{"Exception":"Sabre\\DAV\\Exception\\ServiceUnavailable","Message":"System is in maintenance mode.","Code":0,"Trace":[{"file":"/usr/share/nginx/nextcloud/3rdparty/sabre/event/lib/WildcardEmitterTrait.php","line":89,"function":"checkMaintenanceMode","class":"OCA\\DAV\\Connector\\Sabre\\MaintenancePlugin","type":"->"},{"file":"/usr/share/nginx/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php","line":456,"function":"emit","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/usr/share/nginx/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php","line":253,"function":"invokeMethod","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/usr/share/nginx/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php","line":321,"function":"start","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/usr/share/nginx/nextcloud/apps/dav/lib/Server.php","line":332,"function":"exec","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/usr/share/nginx/nextcloud/apps/dav/appinfo/v2/remote.php","line":35,"function":"exec","class":"OCA\\DAV\\Server","type":"->"},{"file":"/usr/share/nginx/nextcloud/remote.php","line":167,"args":["/usr/share/nginx/nextcloud/apps/dav/appinfo/v2/remote.php"],"function":"require_once"}],"File":"/usr/share/nginx/nextcloud/apps/dav/lib/Connector/Sabre/MaintenancePlugin.php","Line":85,"CustomMessage":"--"},"userAgent":"Mozilla/5.0 (Linux) mirall/3.2.4git (build 6464) (Nextcloud, pop-5.11.0-7620-generic ClientArchitecture: x86_64 OsArchitecture: x86_64)","version":"21.0.3.1"}
{"reqId":"ecVGg50Cof167gh4Ib9d","level":4,"time":"2021-07-15T14:16:24+00:00","remoteAddr":"166.62.236.50","user":"ken","app":"webdav","method":"PROPFIND","url":"/remote.php/dav/files/ken/GameSaves/TheWitcher3","message":{"Exception":"Sabre\\DAV\\Exception\\ServiceUnavailable","Message":"System is in maintenance mode.","Code":0,"Trace":[{"file":"/usr/share/nginx/nextcloud/3rdparty/sabre/event/lib/WildcardEmitterTrait.php","line":89,"function":"checkMaintenanceMode","class":"OCA\\DAV\\Connector\\Sabre\\MaintenancePlugin","type":"->"},{"file":"/usr/share/nginx/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php","line":456,"function":"emit","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/usr/share/nginx/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php","line":253,"function":"invokeMethod","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/usr/share/nginx/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php","line":321,"function":"start","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/usr/share/nginx/nextcloud/apps/dav/lib/Server.php","line":332,"function":"exec","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/usr/share/nginx/nextcloud/apps/dav/appinfo/v2/remote.php","line":35,"function":"exec","class":"OCA\\DAV\\Server","type":"->"},{"file":"/usr/share/nginx/nextcloud/remote.php","line":167,"args":["/usr/share/nginx/nextcloud/apps/dav/appinfo/v2/remote.php"],"function":"require_once"}],"File":"/usr/share/nginx/nextcloud/apps/dav/lib/Connector/Sabre/MaintenancePlugin.php","Line":85,"CustomMessage":"--"},"userAgent":"Mozilla/5.0 (Linux) mirall/3.2.4git (build 6464) (Nextcloud, pop-5.11.0-7620-generic ClientArchitecture: x86_64 OsArchitecture: x86_64)","version":"21.0.3.1"}
{"reqId":"JvRj5F8tXQ5f3LFqYLKw","level":4,"time":"2021-07-15T14:16:24+00:00","remoteAddr":"166.62.236.50","user":"ken","app":"webdav","method":"PROPFIND","url":"/remote.php/dav/files/ken/GameSaves/Control","message":{"Exception":"Sabre\\DAV\\Exception\\ServiceUnavailable","Message":"System is in maintenance mode.","Code":0,"Trace":[{"file":"/usr/share/nginx/nextcloud/3rdparty/sabre/event/lib/WildcardEmitterTrait.php","line":89,"function":"checkMaintenanceMode","class":"OCA\\DAV\\Connector\\Sabre\\MaintenancePlugin","type":"->"},{"file":"/usr/share/nginx/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php","line":456,"function":"emit","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/usr/share/nginx/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php","line":253,"function":"invokeMethod","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/usr/share/nginx/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php","line":321,"function":"start","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/usr/share/nginx/nextcloud/apps/dav/lib/Server.php","line":332,"function":"exec","class":"Sabre\\DAV\\Server","type":"->"},{"file":"/usr/share/nginx/nextcloud/apps/dav/appinfo/v2/remote.php","line":35,"function":"exec","class":"OCA\\DAV\\Server","type":"->"},{"file":"/usr/share/nginx/nextcloud/remote.php","line":167,"args":["/usr/share/nginx/nextcloud/apps/dav/appinfo/v2/remote.php"],"function":"require_once"}],"File":"/usr/share/nginx/nextcloud/apps/dav/lib/Connector/Sabre/MaintenancePlugin.php","Line":85,"CustomMessage":"--"},"userAgent":"Mozilla/5.0 (Linux) mirall/3.2.4git (build 6464) (Nextcloud, pop-5.11.0-7620-generic ClientArchitecture: x86_64 OsArchitecture: x86_64)","version":"21.0.3.1"}

The output of your Apache/nginx/system log in /var/log/____:

891#786891: *22075 open socket #29 left in connection 19
2021/07/15 03:00:06 [alert] 786891#786891: aborting
2021/07/15 04:16:55 [notice] 789173#789173: signal process started
2021/07/15 04:16:57 [notice] 789182#789182: signal process started

2021-07-15_10-35