"browser is not supported" error

[AlexeyMarkarov]

⚠️ Before posting ⚠️

• This is a bug, not a question or an enhancement.
• I've searched for similar issues and didn't find a duplicate.
• I've written a clear and descriptive title for this issue, not just "Bug" or "Crash".
• I agree to follow Nextcloud's Code of Conduct.

Steps to reproduce

1. Install NC 3.25.0 and login -> it looks like a browser.
2. Uninstall 3.25.0 and install 3.24.1 -> it looks like a proper native app.

Alternatively,

1. Install NC 3.24.1 and login to your account.
2. Update to 3.25.0.
3. Clear cache and app data.
4. Login again.

Expected behaviour

Expected native app look and feel.

Actual behaviour

App thinks it's a browser, and shows an error that it's outdated.
Additionally, login credentials are not saved, closing and reopening the app prompts for login again.

Android version

11

Device brand and model

Motorola moto g9 play

Stock or custom OS?

Stock

Nextcloud android app version

3.25.0

Nextcloud server version

26.0.2

Using a reverse proxy?

Yes

Android logs

--------- beginning of main
06-22 12:48:48.442 29146 29146 D AuthenticatorActivity: onPause() ending
06-22 12:48:48.772 29146 29146 D AuthenticatorActivity: onStop() ending
06-22 12:48:48.773 29146 29146 D AuthenticatorActivity: onSaveInstanceState(Bundle) starting
06-22 12:48:49.405 29146 29146 D AuthenticatorActivity: onStart() starting
06-22 12:48:49.413 29146 29146 D AuthenticatorActivity: onResume() starting
06-22 12:48:52.102 29146 29146 D AuthenticatorActivity: onPause() ending
06-22 12:48:52.364 29146 29146 D AuthenticatorActivity: onStop() ending
06-22 12:48:52.364 29146 29146 D AuthenticatorActivity: onSaveInstanceState(Bundle) starting
06-22 12:48:57.212 29146 29146 D AuthenticatorActivity: onStart() starting
06-22 12:48:57.238 29146 29146 D AuthenticatorActivity: onResume() starting
06-22 12:49:02.790 29146 29146 D AuthenticatorActivity: onPause() ending
06-22 12:49:03.190 29146 29146 D AuthenticatorActivity: onStop() ending
06-22 12:49:03.191 29146 29146 D AuthenticatorActivity: onSaveInstanceState(Bundle) starting
06-22 12:49:27.805 29146 29146 D AuthenticatorActivity: onStart() starting
06-22 12:49:27.818 29146 29146 D AuthenticatorActivity: onResume() starting
06-22 12:49:29.215 29146 29146 W cr_AwAutofillManager: Autofill is disabled: AutofillManager isn't available in given Context.
06-22 12:49:29.230 29146 29146 W cr_AwAutofillManager: Autofill is disabled: AutofillManager isn't available in given Context.
06-22 12:49:39.099 29146 29146 D AuthenticatorActivity: onPause() ending
06-22 12:49:39.385 29146 29146 D AuthenticatorActivity: onStop() ending
06-22 12:49:39.390 29146 29146 D AuthenticatorActivity: onSaveInstanceState(Bundle) starting
06-22 12:49:46.206 29146 29146 D AuthenticatorActivity: onStart() starting
06-22 12:49:46.209 29146 29146 D AuthenticatorActivity: onResume() starting
06-22 12:49:47.325 29146 29146 W cr_AwAutofillManager: Autofill is disabled: AutofillManager isn't available in given Context.
06-22 12:49:55.632 29146 29146 D AuthenticatorActivity: onPause() ending
06-22 12:49:55.844 29146 29146 D AuthenticatorActivity: onStop() ending
06-22 12:49:55.845 29146 29146 D AuthenticatorActivity: onSaveInstanceState(Bundle) starting
06-22 12:50:01.134 29146 29171 D MaterialSchemesProviderImpl: User is anonymous, using default schemes
06-22 12:50:01.223 29146 29178 I WM-WorkerWrapper: Worker result SUCCESS for Work [ id=f7d0fefb-0c71-4c55-b7a2-068129477a69, tags={ com.nextcloud.client.jobs.MediaFoldersDetectionWork, *, name:immediate_media_folder_detection, timestamp:1687427401022 } ]
06-22 12:50:04.609 29146 29146 D AuthenticatorActivity: onStart() starting
06-22 12:50:04.613 29146 29146 D AuthenticatorActivity: onResume() starting
06-22 12:50:16.589 29146 29146 D AuthenticatorActivity: onPause() ending
06-22 12:50:16.849 29146 29146 D AuthenticatorActivity: onStop() ending
06-22 12:50:16.851 29146 29146 D AuthenticatorActivity: onSaveInstanceState(Bundle) starting
06-22 12:50:17.363 29146 29146 D AuthenticatorActivity: onDestroy() ending
06-22 12:50:17.457 29146 29146 D FileDisplayActivity: onDestroy() ending
06-22 12:50:17.496 29146 29146 V OperationsService: Destroying service
06-22 12:50:17.497 29146 29146 V FileDownloader: Destroying service
06-22 12:50:17.498 29146 29146 V FileUploader: Destroying service
06-22 12:50:20.354 29146 29146 V FileDisplayActivity: onCreate() start
06-22 12:50:20.363 29146 29146 D MaterialSchemesProviderImpl: User is anonymous, using default schemes
06-22 12:50:20.367 29146 29146 D MaterialSchemesProviderImpl: User is anonymous, using default schemes
06-22 12:50:20.369 29146 29146 D FileDisplayActivity: onCreate(Bundle) starting
06-22 12:50:20.517 29146 29146 D FileDisplayActivity: onStart() starting
06-22 12:50:20.535 29146 29146 E FileDisplayActivity: Access to unexisting list of files fragment!!
06-22 12:50:20.535 29146 29146 V FileDisplayActivity: onResume() start
06-22 12:50:20.536 29146 29146 D FileDisplayActivity: onResume() starting
06-22 12:50:20.538 29146 29146 D MaterialSchemesProviderImpl: User is anonymous, using default schemes
06-22 12:50:20.543 29146 4749 D ExternalLinks: links disabled
06-22 12:50:20.592 29146 29146 D MaterialSchemesProviderImpl: User is anonymous, using default schemes
06-22 12:50:20.594 29146 29146 I chatty : uid=10407(com.nextcloud.client) identical 1 line
06-22 12:50:20.597 29146 29146 D MaterialSchemesProviderImpl: User is anonymous, using default schemes
06-22 12:50:20.600 29146 29146 I OCFileListFragment: onAttach
06-22 12:50:20.602 29146 29146 I OCFileListFragment: onCreateView() start
06-22 12:50:20.602 29146 29146 D ExtendedListFragment: onCreateView
06-22 12:50:20.615 29146 29146 E DrawerActivity: Drawer layout not ready to add drawer listener
06-22 12:50:20.615 29146 29146 I OCFileListFragment: onCreateView() end
06-22 12:50:20.615 29146 29146 I OCFileListFragment: onActivityCreated() start
06-22 12:50:20.655 29146 29146 W DrawerActivity: setDrawerMenuItemChecked has been called with invalid menu-item-ID
06-22 12:50:20.655 29146 29146 W DrawerActivity: setDrawerMenuItemChecked has been called with invalid menu-item-ID
06-22 12:50:20.669 29146 29146 V FileDisplayActivity: onResume() end
06-22 12:50:20.680 29146 29146 V FileDisplayActivity: onPause() start
06-22 12:50:20.681 29146 29146 D FileDisplayActivity: onPause() ending
06-22 12:50:20.681 29146 29146 V FileDisplayActivity: onPause() end
06-22 12:50:20.702 29146 29146 D OperationsService: Creating service
06-22 12:50:20.708 29146 29146 D MaterialSchemesProviderImpl: User is anonymous, using default schemes
06-22 12:50:20.709 29146 29146 D FileDownloader: Creating service
06-22 12:50:20.715 29146 29146 D skia : --- Failed to create image decoder with message 'unimplemented'
06-22 12:50:20.719 29146 29146 D MaterialSchemesProviderImpl: User is anonymous, using default schemes
06-22 12:50:20.720 29146 29146 D FileUploader: Creating service
06-22 12:50:20.720 29146 29146 D skia : --- Failed to create image decoder with message 'unimplemented'
06-22 12:50:20.721 29146 29146 V UploadsStorageManager: Updating state of any killed upload
06-22 12:50:20.723 29146 29146 V UploadsStorageManager: No upload was killed
06-22 12:50:20.886 29146 29146 D AuthenticatorActivity: onCreate(Bundle) starting
06-22 12:50:20.960 29146 29146 W ResourcesCompat: Failed to inflate ColorStateList, leaving it to the framework
06-22 12:50:20.960 29146 29146 W ResourcesCompat: java.lang.UnsupportedOperationException: Failed to resolve attribute at index 0: TypedValue{t=0x2/d=0x7f0400fc a=-1}
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at android.content.res.TypedArray.getColor(TypedArray.java:528)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at androidx.core.content.res.ColorStateListInflaterCompat.inflate(ColorStateListInflaterCompat.java:160)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at androidx.core.content.res.ColorStateListInflaterCompat.createFromXmlInner(ColorStateListInflaterCompat.java:125)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at androidx.core.content.res.ColorStateListInflaterCompat.createFromXml(ColorStateListInflaterCompat.java:104)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at androidx.core.content.res.ResourcesCompat.inflateColorStateList(ResourcesCompat.java:262)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at androidx.core.content.res.ResourcesCompat.getColorStateList(ResourcesCompat.java:236)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at androidx.core.content.ContextCompat.getColorStateList(ContextCompat.java:558)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at androidx.appcompat.content.res.AppCompatResources.getColorStateList(AppCompatResources.java:48)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at androidx.appcompat.widget.TintTypedArray.getColorStateList(TintTypedArray.java:179)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at androidx.appcompat.widget.AppCompatBackgroundHelper.loadFromAttributes(AppCompatBackgroundHelper.java:66)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at androidx.appcompat.widget.AppCompatImageButton.(AppCompatImageButton.java:83)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at androidx.appcompat.widget.AppCompatImageButton.(AppCompatImageButton.java:73)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at androidx.appcompat.app.AppCompatViewInflater.createImageButton(AppCompatViewInflater.java:253)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at androidx.appcompat.app.AppCompatViewInflater.createView(AppCompatViewInflater.java:168)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at androidx.appcompat.app.AppCompatDelegateImpl.createView(AppCompatDelegateImpl.java:1678)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at androidx.appcompat.app.AppCompatDelegateImpl.onCreateView(AppCompatDelegateImpl.java:1729)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at android.view.LayoutInflater.tryCreateView(LayoutInflater.java:1059)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:995)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:959)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at android.view.LayoutInflater.rInflate(LayoutInflater.java:1121)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:1082)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at android.view.LayoutInflater.rInflate(LayoutInflater.java:1124)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:1082)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at android.view.LayoutInflater.rInflate(LayoutInflater.java:1124)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:1082)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at android.view.LayoutInflater.inflate(LayoutInflater.java:680)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at android.view.LayoutInflater.inflate(LayoutInflater.java:532)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at com.owncloud.android.databinding.AccountSetupBinding.inflate(AccountSetupBinding.java:84)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at com.owncloud.android.databinding.AccountSetupBinding.inflate(AccountSetupBinding.java:78)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at com.owncloud.android.authentication.AuthenticatorActivity.onCreate(AuthenticatorActivity.java:326)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at android.app.Activity.performCreate(Activity.java:8108)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at android.app.Activity.performCreate(Activity.java:8092)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1309)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3481)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3683)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:85)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2132)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at android.os.Handler.dispatchMessage(Handler.java:106)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at android.os.Looper.loop(Looper.java:250)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at android.app.ActivityThread.main(ActivityThread.java:7851)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at java.lang.reflect.Method.invoke(Native Method)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
06-22 12:50:20.960 29146 29146 W ResourcesCompat: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:958)
06-22 12:50:20.964 29146 29146 D AuthenticatorActivity: onStart() starting
06-22 12:50:20.965 29146 29146 D AuthenticatorActivity: onNewIntent()
06-22 12:50:20.967 29146 29146 D AuthenticatorActivity: onResume() starting
06-22 12:50:20.978 29146 29146 D FileActivity: Operations service connected
06-22 12:50:20.978 29146 29146 D FileDisplayActivity: Download service connected
06-22 12:50:20.978 29146 29146 D FileDisplayActivity: Upload service connected
06-22 12:50:21.036 29146 29146 D AuthenticatorActivity: onPause() ending
06-22 12:50:21.105 29146 29146 D FirstRunActivity: onCreate(Bundle) starting
06-22 12:50:21.131 29146 29146 D FirstRunActivity: onStart() starting
06-22 12:50:21.133 29146 29146 D FirstRunActivity: onResume() starting
06-22 12:50:21.140 29146 29146 D FileDisplayActivity: onStop() ending
06-22 12:50:21.141 29146 29146 V FileDisplayActivity: onSaveInstanceState() start
06-22 12:50:21.143 29146 29146 D FileDisplayActivity: onSaveInstanceState(Bundle) starting
06-22 12:50:21.143 29146 29146 D ExtendedListFragment: onSaveInstanceState()
06-22 12:50:21.144 29146 29146 V FileDisplayActivity: onSaveInstanceState() end
06-22 12:50:21.471 29146 29146 D AuthenticatorActivity: onStop() ending
06-22 12:50:21.472 29146 29146 D AuthenticatorActivity: onSaveInstanceState(Bundle) starting
06-22 12:50:21.858 29146 29146 D FirstRunActivity: onPause() ending
06-22 12:50:22.192 29146 29146 D FirstRunActivity: onStop() ending
06-22 12:50:22.196 29146 29146 D FirstRunActivity: onSaveInstanceState(Bundle) starting
06-22 12:50:25.060 29146 29146 D UploadsStorageManager: QUERY: (status== ? OR last_result==9 OR last_result==13 OR last_result==11 OR last_result==14 ) AND last_result!= 16 ROWID: -1
06-22 12:50:25.096 29146 29146 V UploadsStorageManager: getUploads() got 0 rows from page 0, 0 rows total so far, last ID -1
06-22 12:50:25.096 29146 29146 V UploadsStorageManager: getUploads() returning 0 (0) rows after reading 1 pages
06-22 12:50:25.096 29146 29146 D UploadsStorageManager: QUERY: (status== ? OR last_result==9 OR last_result==13 OR last_result==11 OR last_result==14 ) AND last_result!= 16 ROWID: -1
06-22 12:50:25.102 29146 29146 V UploadsStorageManager: getUploads() got 0 rows from page 0, 0 rows total so far, last ID -1
06-22 12:50:25.102 29146 29146 V UploadsStorageManager: getUploads() returning 0 (0) rows after reading 1 pages
06-22 12:50:25.146 29146 29146 D UploadsStorageManager: QUERY: (status== ? OR last_result==9 OR last_result==13 OR last_result==11 OR last_result==14 ) AND last_result!= 16 ROWID: -1
06-22 12:50:25.157 29146 29146 V UploadsStorageManager: getUploads() got 0 rows from page 0, 0 rows total so far, last ID -1
06-22 12:50:25.157 29146 29146 V UploadsStorageManager: getUploads() returning 0 (0) rows after reading 1 pages
06-22 12:50:25.158 29146 29146 D UploadsStorageManager: QUERY: (status== ? OR last_result==9 OR last_result==13 OR last_result==11 OR last_result==14 ) AND last_result!= 16 ROWID: -1
06-22 12:50:25.164 29146 29146 V UploadsStorageManager: getUploads() got 0 rows from page 0, 0 rows total so far, last ID -1
06-22 12:50:25.165 29146 29146 V UploadsStorageManager: getUploads() returning 0 (0) rows after reading 1 pages
06-22 12:51:51.459 29146 29146 D FirstRunActivity: onDestroy() ending
06-22 12:51:51.516 29146 29146 D FirstRunActivity: onCreate(Bundle) starting
06-22 12:51:51.562 29146 29146 D FirstRunActivity: onStart() starting
06-22 12:51:51.574 29146 29146 D FirstRunActivity: onResume() starting

Server error logs

{"reqId":"em7zFdjhW4PYZqg8UFuM","level":3,"time":"2023-06-21T14:50:31+00:00","remoteAddr":"172.25.0.1","user":"alex","app":"index","method":"POST","url":"/apps/text/session/sync","message":"OCA\\Text\\Service\\DocumentService::getFileForSession(): Argument #1 ($session) must be of type OCA\\Text\\Db\\Session, bool given, called in /var/www/html/apps/text/lib/Service/ApiService.php on line 232 in file '/var/www/html/apps/text/lib/Service/DocumentService.php' line 433","userAgent":"Motorola moto g(9) play (Android)","version":"26.0.2.1","exception":{"Exception":"Exception","Message":"OCA\\Text\\Service\\DocumentService::getFileForSession(): Argument #1 ($session) must be of type OCA\\Text\\Db\\Session, bool given, called in /var/www/html/apps/text/lib/Service/ApiService.php on line 232 in file '/var/www/html/apps/text/lib/Service/DocumentService.php' line 433","Code":0,"Trace":[{"file":"/var/www/html/lib/private/AppFramework/App.php","line":183,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[["OCA\\Text\\Controller\\SessionController"],"sync"]},{"file":"/var/www/html/lib/private/Route/Router.php","line":315,"function":"main","class":"OC\\AppFramework\\App","type":"::","args":["OCA\\Text\\Controller\\SessionController","sync",["OC\\AppFramework\\DependencyInjection\\DIContainer"],["text.Session.sync"]]},{"file":"/var/www/html/lib/base.php","line":1058,"function":"match","class":"OC\\Route\\Router","type":"->","args":["/apps/text/session/sync"]},{"file":"/var/www/html/index.php","line":36,"function":"handleRequest","class":"OC","type":"::","args":[]}],"File":"/var/www/html/lib/private/AppFramework/Http/Dispatcher.php","Line":169,"Previous":{"Exception":"TypeError","Message":"OCA\\Text\\Service\\DocumentService::getFileForSession(): Argument #1 ($session) must be of type OCA\\Text\\Db\\Session, bool given, called in /var/www/html/apps/text/lib/Service/ApiService.php on line 232","Code":0,"Trace":[{"file":"/var/www/html/apps/text/lib/Service/ApiService.php","line":232,"function":"getFileForSession","class":"OCA\\Text\\Service\\DocumentService","type":"->","args":["*** sensitive parameters replaced ***",null]},{"file":"/var/www/html/apps/text/lib/Controller/SessionController.php","line":92,"function":"sync","class":"OCA\\Text\\Service\\ApiService","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/html/lib/private/AppFramework/Http/Dispatcher.php","line":230,"function":"sync","class":"OCA\\Text\\Controller\\SessionController","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\\Text\\Controller\\SessionController"],"sync"]},{"file":"/var/www/html/lib/private/AppFramework/App.php","line":183,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[["OCA\\Text\\Controller\\SessionController"],"sync"]},{"file":"/var/www/html/lib/private/Route/Router.php","line":315,"function":"main","class":"OC\\AppFramework\\App","type":"::","args":["OCA\\Text\\Controller\\SessionController","sync",["OC\\AppFramework\\DependencyInjection\\DIContainer"],["text.Session.sync"]]},{"file":"/var/www/html/lib/base.php","line":1058,"function":"match","class":"OC\\Route\\Router","type":"->","args":["/apps/text/session/sync"]},{"file":"/var/www/html/index.php","line":36,"function":"handleRequest","class":"OC","type":"::","args":[]}],"File":"/var/www/html/apps/text/lib/Service/DocumentService.php","Line":433},"CustomMessage":"--"}}

Additional information

Version 3.24.1 does not have this problem. NC in actual browser (either desktop or mobile) also works fine.

https://help.nextcloud.com/t/client-looks-weird/93563 - same problem but no real solution.
If there is indeed some server misconfiguration and android app encounters a problem then it should clearly communicate that problem instead of (or at least in addition to) falling back to being a broken webview.

[AlexeyMarkarov]

I updated Android System WebView to v114.0.5735.196 and both NC apps (Files and Talk) seem to be fixed. Still curious why it happened though.

[fakendry]

Good morning, I have the exact same problem on iPhone (iOS 17.4.1 and Nextcloud version 28). However I tried to connect the app to the nextcloud demo server “https://nextcloud27.our-servers.de/” (Username: user Password: demo123) and the app works perfectly. So it seems like a server problem.

The problem arose after reinstallation nextcloud.

Excuse me, do I have to open a new post?