# Nextcloud Apps page: no screenshots (403 from usercontent.apps.nextcloud.com)

**URL:** https://forum.yunohost.org/t/nextcloud-apps-page-no-screenshots-403-from-usercontent-apps-nextcloud-com/43157
**Category:** Support apps
**Tags:** nextcloud, english
**Created:** [October 13, 2026, 6:51am UTC](https://forum.yunohost.org/t/nextcloud-apps-page-no-screenshots-403-from-usercontent-apps-nextcloud-com/43157 "2026-10-13T06:51:46Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![9t0i](https://forum.yunohost.org/letter_avatar_proxy/v4/letter/9/278dde/32.png) [@9t0i](https://forum.yunohost.org/u/9t0i)
#### Post date: [October 13, 2026, 6:51am UTC](https://forum.yunohost.org/t/nextcloud-apps-page-no-screenshots-403-from-usercontent-apps-nextcloud-com/43157/1 "2026-10-13T06:51:46Z")

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### I have searched the forum for similar issues

on

### This category is for issues regarding specific apps, _NOT_ general issues with YunoHost.

on

### This form is written in English but feel free to write in French if you’re more comfortable!

on

### What app is this about, and its version

Nextcloud 33.0.4~ynh1, now upgraded to 35.0.1~ynh1

### What YunoHost version are you running

12.1.41.2 (Debian 12 bookworm)

### What type of hardware are you using

Old laptop or computer

### Describe your issue

After restoring a full backup on the new machine, the Apps page in Nextcloud shows no screenshots. Most apps show a gear icon, and a few show a black “Preview not available / Image not recognized” box. App names, descriptions and the Download and enable buttons all work.

![image](https://i.ibb.co/W4gZQN5y/image.png)

Does anyone know what could be wrong/what the solution is?

### Share relevant logs or error messages

I asked Claude for help diagnosing the issue and this is a summary of that after reading through logs:

- In browser dev tools, the failing image requests go to `usercontent.apps.nextcloud.com` and return 403 Forbidden. This happens in every browser, including private windows. Nothing reaches my nginx access log.
- The long path in the request decodes (base64) to another `usercontent.apps.nextcloud.com/<base64>` address, and only inside that is the real GitHub raw image. So the screenshot address is wrapped by the proxy twice.
- The app store’s own JSON already contains addresses of the form `usercontent.apps.nextcloud.com/<base64>`. Counting the first 16 characters after the slash: `aHR0cHM6Ly9yYXcu` (a single-wrapped `https://raw`) appears about 1000 times, both in the cached `apps.json` and in a fresh download from `apps.nextcloud.com/api/v1/platform/33.0.4/apps.json`. The double-wrapped form (`aHR0cHM6Ly91c2Vy`) appears in neither.
- In Nextcloud 33.0.4, `apps/settings/lib/Controller/AppSettingsController.php` builds the address like this, with no check for whether it is already proxied: ` 534: 'screenshot' => isset($app['screenshots'][0]['url']) ? 'https://usercontent.apps.nextcloud.com/' . base64_encode($app['screenshots'][0]['url']) : '',`  
Network is fine. From the server, `curl -I` to `raw.githubusercontent.com` and `apps.nextcloud.com` both return `HTTP/2 200`, and PHP as the app user can download from GitHub. Nextcloud’s config has no `has_internet_connection`, `appstoreurl` or `proxy` overrides.
- `occ status` is healthy and `nextcloud.log` shows no errors about images or the app store.

Please let me know if I need to upload any specific logs.

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<div class="post-metadata">

### Author: ![9t0i](https://forum.yunohost.org/letter_avatar_proxy/v4/letter/9/278dde/32.png) [@9t0i](https://forum.yunohost.org/u/9t0i)
#### Post date: [October 13, 2026, 8:28am UTC](https://forum.yunohost.org/t/nextcloud-apps-page-no-screenshots-403-from-usercontent-apps-nextcloud-com/43157/2 "2026-10-13T08:28:21Z")

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I didn’t find it before I made my post, but there is a bug report about this here - [[Bug]: App Store does not show preview screenshots · Issue #65055 · nextcloud/server · GitHub](https://github.com/nextcloud/server/issues/65055)

The solution in this issue worked for me to get images working again.

What I did:

In `apps/appstore/lib/Controller/ApiController.php` replaced line 309 with `return $this->proxify($url);` and line 481 with `'screenshot' => isset($app['screenshots'][0]['url']) ? $this->proxify($app['screenshots'][0]['url']) : '',` then added before the very last closing bracket in this file:

```auto
private function proxify(string $url): string {
    $prefix = 'https://usercontent.apps.nextcloud.com/';
    return str_starts_with($url, $prefix) ? $url : $prefix . base64_encode($url);
}

```

Verified syntax was ok with `php -l apps/appstore/lib/Controller/ApiController.php`

Then I reloaded php with `sudo systemctl reload php8.4-fpm php8.5-fpm` and the images on the app page are working again.