When I paste a link into WhatsApp or some other applications like this forum, the banner image (og:image) is set to https://server.com/core/img/favicon-fb.png
.
This is basically the default Nextcloud icon which looks like this:
How can I use my own banner image? Can I do this within the theming app? If not, how can I do this manually without losing the changes I made in the theming app?
(Env: Nextcloud 15.0.11)
Ok, since nobody replied I thought I try to create a custom theme directory and place my own image there hoping that it wouldn’t destroy my settings in the theming app.
I added the following file themes/mytheme/core/img/favicon-fb.png
and set 'theme' => 'mytheme',
in config.php
.
Yet, it still shows the old image above and not my image.
I emptied all caches to no avail. It seems the config option is totally ignored.