Everything was working this morning. Now when launching the content my browser is getting stuck (showing a white screen). Seems to be stuck at a broswercheck:
If I open the link I get this error on my Firefox version 88.0.1 on RHEL8.2
Some e-learning content may require a late version of the Adobe Flash Player plug-in.
Unfortunately the Adobe Flash Player is End Of Life and no longer supported, in fact it is not even available for download anymore.
I get the same error too, but only "sometimes". The times I don't get that error, all I get is a blank page. Chrome Developer Tools are showing a problem with an API of the browsercheck (I've sent this to support already).
That said, I've learned that you can pick apart the URL in the window to bypass the browsercheck :)
I use ROL in Safari and disabling "Security -> Fraudulent sites: Warn when visiting a fraudulent website" checkbox helped my case.
Small text in grey under that checkbox says the feature uses "Google Safe Browsing". This is smth. I would look into when facing similar issue in Chromium based browsers.