Links to many courses do not work as the result of a silent address change. I think someone added the “library” folder to the path, effectively making all existing links invalid.
I believe this to be a mistake - public URL change just doesn’t make any sense to me. At least, if you must make changes to the addresses, set the aliases up.
At the moment, this means that countless forum links no longer work.
The examples of the broken links are below. Following the link users are presented with an empty screen.
VA German music: Login - LingQ
Tagesschau: Login - LingQ
ZDF Sendung: Login - LingQ
Youtube imports: Login - LingQ