Nextcloud Web Interface Showing Black Screen After Login Any Solutions?

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Hi Everyone,

I recently encountered a problem where the Nextcloud web interface turns completely black screen after logging in, making it impossible to access my files, dashboard, or any menu options.

The login screen appears as expected, but once I enter my credentials, the page loads into a black screen with no visible elements. This issue persists across multiple browsers, including Chrome and Firefox.

I have tried clearing my browser cache, using incognito mode, and even checking the browser console, which shows some JavaScript errors related to CSS or themes. Running occ maintenance:repair didn’t fix the issue, and disabling custom themes in config.php also had no effect.

Iam running Nextcloud on an Ubuntu 22.04 server with Apache and MySQL, and everything was working fine before the latest update. Could this be related to a caching issue, a plugin conflict, or a broken theme?

Any suggestions on how to reset the UI or fix this without affecting my stored data? Thanks in advance for any help!

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And those errors or warnings are… ?

We may be able to help you better if you fill out the support template. :slight_smile:

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out of blue it sound like you broke your theming. As default works well and “brakes” once you login this must be some user setting. check the settings of you user with occ occ user:setting {userId}

In my system this theme settings are well readable

dark theme 
  - theming:
    - userCacheBuster: 2
    - enabled-themes: ["dark"]
    - primary_color: #d3a967
    - background_image: tommy-chau-already.jpg
    - background_color: #35229f
    - force_enable_blur_filter: no
light theme 
  - theming:
    - enabled-themes: ["default"]
    - userCacheBuster: 2
    - primary_color: #6a2af4
    - background_image: tommy-chau-already.jpg
    - background_color: #35229f
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