No rendering after app theming install and remove

ℹ️ Support
1
Support intro

The Basics

  • Nextcloud Server version (e.g., 29.x.x):
    • 32
  • Operating system and version (e.g., Ubuntu 24.04):
    • Linux (webhost)
  • Web server and version (e.g, Apache 2.4.25):
    • unknown
  • Reverse proxy and version _(e.g. nginx 1.27.2)
    • NA
  • PHP version (e.g, 8.3):
    • 8.3
  • Is this the first time you’ve seen this error? (Yes / No):
    • Yes
  • When did this problem seem to first start?
    • after installing . removing theming app
  • Installation method (e.g. AlO, NCP, Bare Metal/Archive, etc.)
    • webhost
  • Are you using CloudfIare, mod_security, or similar? (Yes / No)
    • no

Summary of the issue you are facing:

I have installed heming apps, and I lost the rendring . I only have raw display (menu on left, no color, no scrolling). After removing the apps, the problem is still there. I find around the net and this forum, but no smilar problem. As it is a web host, I dont have access to CLI, or php config file.

Steps to replicate it (hint: details matter!):

  1. Install theming app

Log entries

Nextcloud

The only error (many occurences) is

 Zend OPcache API is restricted by "restrict_api" configuration directive at /home/cecabos/www/nextcloud/lib/private/Config.php

Web Browser

.

PASTE

Web server / Reverse Proxy

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

no acces to logs of http server

Configuration

Nextcloud

No acces to CLI

PASTE HERE

Apps

No acces to CLI

2

What, precisely, do you mean by “theming app(s)” and installing?

What apps are you referring to?
How did you install them?

3

In application list, one is called themeing.

I just check, and the deactivation of theming failed (Trying to access array offset on false at /xxx/nextcloud/apps/settings/lib/SetupChecks/PhpOpcacheSetup.php#7

I dont have acces to php config of this webhost.

Is there a possibility to config nextcloud to not use opcache ?

According to doc Memory caching — Nextcloud latest Administration Manual latest documentation

PHP bundles the Zend OPcache in core since version 5.5, so you don’t need to install an opcache manually.

How can I debug the opp cache issue ?

Or removing the app theming ?

4

In application list, one is called themeing.
I just check, and the deactivation of theming failed

The theming app is always enable. It’s neither possible to install it separately nor possible to disable it. So I remain unclear what you did originally or are trying to do.

Trying to access array offset on false at /xxx/nextcloud/apps/settings/lib/SetupChecks/PhpOpcacheSetup.php#7

Please provide the full raw log entry / stack trace as described in the support template.

It would also be helpful if you provided your config, also as described in the support template.

5

Thanks for your answer.

The configuraton is in the first post

As it is a webhost, I dont have acces to all the infos required.

During incremental upgrape of an old revision of NC, I have manually activated theming, and I lost the rendering (I have raw php pages). I think it is an old revision of theming, before it was integrated in the core (I have the button to desactivate this app in application __> personalisation, but is generate an error

theming can't be disabled

I dont see this app in the app menu (list of apps)

I found a similar issue on the net

Here are the last log lines. I dont see a relation between opcache and rendering


{"reqId":"advJ7qi4MSs59R6N4uXU7QAAASs","level":3,"time":"2026-04-12T16:35:58+00:00","remoteAddr":"xx.xx.9.xx","user":"xxxxx","app":"PHP","method":"GET","url":"/nextcloud/index.php/apps/logreader/api/poll?lastReqId=advJ2aDlUNaSCRu2hms88gAAACA","scriptName":"/nextcloud/index.php","message":"Zend OPcache API is restricted by \"restrict_api\" configuration directive at /home/xxxxx/www/nextcloud/lib/private/Config.php#206","userAgent":"Mozilla/5.0 (X11; Linux x86_64; rv:140.0) Gecko/20100101 Firefox/140.0","version":"32.0.8.2","data":{"app":"PHP"}}
{"reqId":"advJ7qDlUNaSCRu2hmtLHQAAAHs","level":3,"time":"2026-04-12T16:35:59+00:00","remoteAddr":"xx.xx.9.xx","user":"xxxxxxx","app":"PHP","method":"GET","url":"/nextcloud/index.php/apps/logreader/api/poll?lastReqId=adqEqLQETd%40v25fTojNQ3gAAA0g","scriptName":"/nextcloud/index.php","message":"Zend OPcache API is restricted by \"restrict_api\" configuration directive at /home/xxxx/www/nextcloud/lib/private/Config.php#206","userAgent":"Mozilla/5.0 (X11; Linux x86_64; rv:140.0) Gecko/20100101 Firefox/140.0","version":"32.0.8.2","data":{"app":"PHP"}}
{"reqId":"advJ@ai4MSs59R6N4uXcQQAAAXg","level":3,"time":"2026-04-12T16:36:10+00:00","remoteAddr":"xx2.xx.9.xx","user":"xxxxx","app":"PHP","method":"GET","url":"/nextcloud/index.php/apps/logreader/api/poll?lastReqId=advJ2aDlUNaSCRu2hms88gAAACA","scriptName":"/nextcloud/index.php","message":"Zend OPcache API is restricted by \"restrict_api\" configuration directive at /home/xxxxx/www/nextcloud/lib/private/Config.php#206","userAgent":"Mozilla/5.0 (X11; Linux x86_64; rv:140.0) Gecko/20100101 Firefox/140.0","version":"32.0.8.2","data":{"app":"PHP"}}
{"reqId":"advJ@ai4MSs59R6N4uXcNAAAAQs","level":3,"time":"2026-04-12T16:36:10+00:00","remoteAddr":"xx.xx.9.xx","user":"xxx","app":"PHP","method":"GET","url":"/nextcloud/index.php/apps/logreader/api/poll?lastReqId=adqEqLQETd%40v25fTojNQ3gAAA0g","scriptName":"/nextcloud/index.php","message":"Zend OPcache API is restricted by \"restrict_api\" configuration directive at /home/xxxx/nextcloud/lib/private/Config.php#206","userAgent":"Mozilla/5.0 (X11; Linux x86_64; rv:140.0) Gecko/20100101 Firefox/140.0","version":"32.0.8.2","data":{"app":"PHP"}}
{"reqId":"advJ@aDlUNaSCRu2hmtR5QAAAC0","level":3,"time":"2026-04-12T16:36:10+00:00","remoteAddr":"xx.xx.9.xx","user":"xxxs","app":"PHP","method":"GET","url":"/nextcloud/ocs/v2.php/apps/notifications/api/v2/notifications","scriptName":"/nextcloud/ocs/v2.php","message":"Zend OPcache API is restricted by \"restrict_api\" configuration directive at /home/xxx/www/nextcloud/lib/private/Config.php#206","userAgent":"Mozilla/5.0 (X11; Linux x86_64; rv:140.0) Gecko/20100101 Firefox/140.0","version":"32.0.8.2","data":{"app":"PHP"}}
6

To clarify with screen capture

menu application

menu application –> personalisation

7

I found some logs if it can help

"Trace": [
      {
        "file": "/home/xxx/www/nextcloud/apps/settings/lib/Controller/AppSettingsController.php",
        "line": 627,
        "function": "disableApp",
        "class": "OC\\App\\AppManager",
        "type": "->",
        "args": [
          "theming"
        ]
      },
      {
        "file": "/home/xxxxx/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php",
        "line": 204,
        "function": "disableApps",
        "class": "OCA\\Settings\\Controller\\AppSettingsController",
        "type": "->",
        "args": [
          [
            "theming"
          ]
        ]
      },
      {
        "file": "/home/xxx/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php"
        "line": 118,
        "function": "executeController",
        "class": "OC\\AppFramework\\Http\\Dispatcher",
        "type": "->",
        "args": [
          {
            "__class__": "OCA\\Settings\\Controller\\AppS
8

Solution found.

At the root of the site, there is a

.ovhconfig file :



http.firewall=none
app.engine.version=8.3
environment=production
app.engine=phpcgi
container.image=stable64

What is important is app.engine=phpcgi