Thumbnails not showing in external clients

[jazzsnobeatcake]

Describe the bug

External clients such as Clipious or this Kodi addon currently cannot load thumbnails via the API if Invidious webclient is protected by SSOwat.

These clients work as expected if the Invidious webclient is accessible to visitors.

Context

Running the latest versions of YNH and the Invidious app on a VPS .
The Invidious webclient is only accessible behind SSOwat, the API allows access by and returns data to unregistered visitors.
host and external_port are set to "host.tld" and "443" in /var/www/invidious/config/config.yml.

Steps to reproduce

Open incognito window
Go to https://host.tld/api/v1/videos/dQw4w9WgXcQ (or any other video ID)
API returns results without asking for a SSOwat login
Try to open one of the thumbnail URIs, i.e. "https://host.tld/vi/dQw4w9WgXcQ/maxres.jpg"
You are now looking at the SSOwat login page instead of the video thumbnail

Expected behavior

Thumbnail should load without getting redirected to SSOwat login page

Possible solution

Make https://host.tld/vi/* follow the configuration for https://host.tld/api/v1

[ericgaspar]

If you are willing to test a possible fix ->
sudo yunohost app upgrade invidious -u https://github.com/YunoHost-Apps/invidious_ynh/tree/Thumbnails

[jazzsnobeatcake]

Thanks! Got around to it just now and running it returned

Error: Corrupted TOML read from /var/cache/yunohost/app_tmp_work_dirs/app_8v5h525v/manifest.toml (reason: Duplicate keys! (line 63 column 1 char 1521))

[ericgaspar]

sorry, my mistake. can you retry?

[jazzsnobeatcake]

Upgrading worked and it fixed the issue. Clipious is now loading thumbnails!