I can't post a BuddyPress activity with images or video

Please check your WordPress site health page (WordPress backend panel -> Tools -> Site Health), the most common cause of being unable to make an activity post with media (images or video) is due to having an outdated MariaDB database.

If you have an outdated MariaDB version installed, please update it to the latest version, and then uninstall and reinstall the "Vikinger Media" plugin, if the plugin is installed successfully, the "yourprefix_vkmedia_media" table will be created and available in your WordPress database.