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Sorry to hear you’re facing problems 
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In order to help you as quickly as possible, before clicking Create Topic please provide as much of the below as you can. Feel free to use a pastebin service for logs, otherwise either indent short log examples with four spaces:
example
Or for longer, use three backticks above and below the code snippet:
longer
example
here
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 
Nextcloud version (eg, 20.0.5): 29
Operating system and version (eg, Ubuntu 20.04): TrueNAS-SCALE-23.10.1.1
Apache or nginx version (eg, Apache 2.4.25): don’t know where to find
PHP version (eg, 7.4): don’t know where to find
The issue you are facing:
Is this the first time you’ve seen this error? (Y/N): N
Steps to replicate it:
- When i go to NextCloud web / phone app and login, it shows nothing under Files
- Can see some of the content when i click on Photos or go into the SMB share, i see some data. The create folder option is grayed out too
The output of your Nextcloud log in Admin > Logging: (this is part of the log, browser crashes if I try to paste entire log file (incl. pastebin)
"reqId":"Q4uH9vZddmBQB2L2Hnnh","level":3,"time":"2024-03-19T03:25:58+00:00","remoteAddr":"192.168.41.123","user":"admin","app":"index","method":"GET","url":"/core/preview?c=1ea09708119834b5e13388ae0e22a429&fileId=47&x=256&y=256","message":"Could not get appdata folder for preview","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36 Edg/122.0.0.0","version":"28.0.3.2","exception":{"Exception":"RuntimeException","Message":"Could not get appdata folder for preview","Code":0,"Trace":[{"file":"/var/www/html/lib/private/Files/AppData/AppData.php","line":147,"function":"getAppDataFolder","class":"OC\\Files\\AppData\\AppData","type":"->","args":[]},{"file":"/var/www/html/lib/private/Preview/Storage/Root.php","line":74,"function":"newFolder","class":"OC\\Files\\AppData\\AppData","type":"->","args":["6/7/c/6/a/1/e/47"]},{"file":"/var/www/html/lib/private/Preview/Generator.php","line":607,"function":"newFolder","class":"OC\\Preview\\Storage\\Root","type":"->","args":["47"]},{"file":"/var/www/html/lib/private/Preview/Generator.php","line":133,"function":"getPreviewFolder","class":"OC\\Preview\\Generator","type":"->","args":[["OC\\Files\\Node\\File"]]},{"file":"/var/www/html/lib/private/Preview/Generator.php","line":110,"function":"generatePreviews","class":"OC\\Preview\\Generator","type":"->","args":[["OC\\Files\\Node\\File"],[[256,256,true,"fill"]],"image/jpeg"]},{"file":"/var/www/html/lib/private/PreviewManager.php","line":187,"function":"getPreview","class":"OC\\Preview\\Generator","type":"->","args":[["OC\\Files\\Node\\File"],256,256,true,"fill",null]},{"file":"/var/www/html/core/Controller/PreviewController.php","line":173,"function":"getPreview","class":"OC\\PreviewManager","type":"->","args":[["OC\\Files\\Node\\File"],256,256,true,"fill"]},{"file":"/var/www/html/core/Controller/PreviewController.php","line":141,"function":"fetchPreview","class":"OC\\Core\\Controller\\PreviewController","type":"->","args":[["OC\\Files\\Node\\File"],256,256,false,true,"fill",false]},{"file":"/var/www/html/lib/private/AppFramework/Http/Dispatcher.php","line":230,"function":"getPreviewByFileId","class":"OC\\Core\\Controller\\PreviewController","type":"->","args":[47,256,256,false,true,"fill",false]},{"file":"/var/www/html/lib/private/AppFramework/Http/Dispatcher.php","line":137,"function":"executeController","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[["OC\\Core\\Controller\\PreviewController"],"getPreviewByFileId"]},{"file":"/var/www/html/lib/private/AppFramework/App.php","line":184,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[["OC\\Core\\Controller\\PreviewController"],"getPreviewByFileId"]},{"file":"/var/www/html/lib/private/Route/Router.php","line":315,"function":"main","class":"OC\\AppFramework\\App","type":"::","args":["OC\\Core\\Controller\\PreviewController","getPreviewByFileId",["OC\\AppFramework\\DependencyInjection\\DIContainer"],["core.Preview.getPreviewByFileId"]]},{"file":"/var/www/html/lib/base.php","line":1069,"function":"match","class":"OC\\Route\\Router","type":"->","args":["/core/preview"]},{"file":"/var/www/html/index.php","line":39,"function":"handleRequest","class":"OC","type":"::","args":[]}],"File":"/var/www/html/lib/private/Files/AppData/AppData.php","Line":108,"message":"Could not get appdata folder for preview","exception":{},"CustomMessage":"Could not get appdata folder for preview"}}
{"reqId":"6EcwdPPBBSvRRPIH28i0","level":3,"time":"2024-03-19T03:36:10+00:00","remoteAddr":"::1","user":"admin","app":"files_external","method":"POST","url":"/apps/files_external/globalstorages","message":"Local storage path does not exist \"photos/\"","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36 Edg/122.0.0.0","version":"28.0.3.2","exception":{"Exception":"OCP\\Files\\StorageNotAvailableException","Message":"Local storage path does not exist \"photos/\"","Code":1,"Trace":[{"file":"/var/www/html/apps/files_external/lib/MountConfig.php","line":128,"function":"__construct","class":"OC\\Files\\Storage\\Local","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/html/apps/files_external/lib/Controller/StoragesController.php","line":245,"function":"getBackendStatus","class":"OCA\\Files_External\\MountConfig","type":"::","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/html/apps/files_external/lib/Controller/GlobalStoragesController.php","line":134,"function":"updateStorageStatus","class":"OCA\\Files_External\\Controller\\StoragesController","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/html/lib/private/AppFramework/Http/Dispatcher.php","line":230,"function":"create","class":"OCA\\Files_External\\Controller\\GlobalStoragesController","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/html/lib/private/AppFramework/Http/Dispatcher.php","line":137,"function":"executeController","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[["OCA\\Files_External\\Controller\\GlobalStoragesController"],"create"]},{"file":"/var/www/html/lib/private/AppFramework/App.php","line":184,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[["OCA\\Files_External\\Controller\\GlobalStoragesController"],"create"]},{"file":"/var/www/html/lib/private/Route/Router.php","line":315,"function":"main","class":"OC\\AppFramework\\App","type":"::","args":["OCA\\Files_External\\Controller\\GlobalStoragesController","create",["OC\\AppFramework\\DependencyInjection\\DIContainer"],["files_external.global_storages.create"]]},{"file":"/var/www/html/lib/base.php","line":1069,"function":"match","class":"OC\\Route\\Router","type":"->","args":["/apps/files_external/globalstorages"]},{"file":"/var/www/html/index.php","line":39,"function":"handleRequest","class":"OC","type":"::","args":[]}],"File":"/var/www/html/lib/private/Files/Storage/Local.php","Line":106,"Hint":"Storage is temporarily not available","message":"Local storage path does not exist \"photos/\"","exception":{},"CustomMessage":"Local storage path does not exist \"photos/\""}}
{"reqId":"U785cNacW5GJWXNlHoY7","level":3,"time":"2024-03-19T03:36:13+00:00","remoteAddr":"192.168.41.123","user":"admin","app":"files_external","method":"GET","url":"/apps/files_external/globalstorages/1?testOnly=true","message":"Local storage path does not exist \"photos/\"","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36 Edg/122.0.0.0","version":"28.0.3.2","exception":{"Exception":"OCP\\Files\\StorageNotAvailableException","Message":"Local storage path does not exist \"photos/\"","Code":1,"Trace":[{"file":"/var/www/html/apps/files_external/lib/MountConfig.php","line":128,"function":"__construct","class":"OC\\Files\\Storage\\Local","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/html/apps/files_external/lib/Controller/StoragesController.php","line":245,"function":"getBackendStatus","class":"OCA\\Files_External\\MountConfig","type":"::","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/html/apps/files_external/lib/Controller/StoragesController.php","line":298,"function":"updateStorageStatus","class":"OCA\\Files_External\\Controller\\StoragesController","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/html/lib/private/AppFramework/Http/Dispatcher.php","line":230,"function":"show","class":"OCA\\Files_External\\Controller\\StoragesController","type":"->","args":[1,"*** sensitive parameters replaced ***"]},{"file":"/var/www/html/lib/private/AppFramework/Http/Dispatcher.php","line":137,"function":"executeController","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[["OCA\\Files_External\\Controller\\GlobalStoragesController"],"show"]},{"file":"/var/www/html/lib/private/AppFramework/App.php","line":184,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[["OCA\\Files_External\\Controller
The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):
PASTE HERE
The output of your Apache/nginx/system log in /var/log/____:
PASTE HERE
PASTE HERE
Output errors in nextcloud.log in /var/www/ or as admin user in top right menu, filtering for errors. Use a pastebin service if necessary.
