[solved] Internal Server Error after 16.0.1 Update

[dbukenberger]

Nextcloud version: 16.0.1
Operating system and version: not sure, hostet on all-inkl.com
Apache or nginx version: same
PHP version: tried 7.1, 7.2 & 7.3

The issue I am facing:
I updated (from 15.0.7) to 16.0.1 with the updater and everything went smooth as usual. However, since then I can no longer access the Settings of my installation … all I get is an internal server error (see below for the logs):

The log suggests, that it has something to do with the Mail Template Editor (which I never knowingly used) so I deactivated it - now, when I want to access the “Settings” I get this:

Is this the first time I’ve seen this error? Yes

Steps to replicate it:

1. Whenever I try to access: /index.php/settings/user

The output of my Nextcloud log:

• From the /data/nextcloud.log I get the error-message:
  Class ‘OC_L10N’ not found
  (the whole thing https://pastebin.com/7QZgBszZ)
• There I found out it had to have something to do with the templateeditor app so when I deactivate the Mail Template Editor app, the error message changes (see image above) and I get this in the log:
  Call to undefined method OCP\Util::linkTo()
  (the whole thing https://pastebin.com/nk010YsM)

The output of my config.php file in /path/to/nextcloud/config/:
https://pastebin.com/bA3h5jD3

Thank you for any suggestions. =)

[Sanook]

Looks like an old bug in the updater.

I would disable app for app with the occ command and try again.

Update auf NC 14 hat mir folgendes Problem bereit:

Man sollte zuerst alle Apps updaten, bevor man ein Upgrade von Nextcloud macht. (Das sollte der Updater eigentlich automatisch machen @tflidd bitte an die Server-Entwickler weitersagen). @hutch71 Du kannst mit occ app:list die installierten Apps anzeigen und mit occ app:disable app-name alle Apps disablen. Danach sollte der Web-Updater wieder funktionieren. Zumindest hat das bei mir funktioniert. Edit: Mittlerweile habe ich herausgefunden, dass der Epub-Reader und Spreed.me von Nextcl…

Web updater fails when updating from NC13 → 14 if EPUB reader is installed

Update von NC13.0.6 auf 14.01: ein kleiner Erfahrungsbericht

Beim Upgrade der ersten Instanz ist der Installer mit “Server error” abgeschmiert, was natürlich sehr ärgerlich ist. Deshalb habe ich bei der nächsten Instanz vor dem Upgrade mit occ app:list eine Liste der installierten Apps erstellt und nach dem Upgrade jede einzelne App kontrolliert ob die wieder funktionieren. (Der Installer ist hier beim Upgrade ebenfalls abgeschmiert). Tatsächlich waren ein paar Apps dabei, die im Web UI aktiviert waren, aber tatsächlich in der occ app:list nach dem Upg…

[dbukenberger]

Okay, cool - that worked. Thank you for that tip. =)

With the Mail Template Editor deactivated I also had to deactivate the Updater app to regain full access to all settings.
Is this Updater app crucial? What does it update? I could not find it in the app store. o_O

[Sanook]

I always disable third party apps BEFORE updating Nextcloud.

IMHO the updater should check before updating but it does not

[dbukenberger]

I think I saw cases where the app-manager stated, that apps are not tested or might cause issues with a newer version and disabled them. Therefore, I figured the installation has everything under control - but apparently I was wrong.

Thank you again for your help - I will incorporate this manual step in my update schedule.

[dor]

Hi. I have the same problem
I updated (from 15.0.4) to 16.0.1.1 and everything went smooth but now i get an internal server error.
i have php 7.2.15
my sql 10.2.12
on qnap with qts 4.3.6
i don’t now what to do because there are no errors in my nextcloud.log
please help