I downloaded the Free Learning 5.14.15 module for v21.0.00 from the extend page to update the module version we were using. I unzipped and installed the files, and ran the update, receiving 4 screens full of error messages. I have screenshots of those and will share if that helps.
In trying to fix the problem I checked that I had downloaded the proper version and not the 5.16.09 version that requires v22.0.00. I had downloaded the correct 5.14.15 zip file. But on unzipping and checking in the Free Learning directory inside, it had a version.php file with the entry $moduleVersion = ‘5.16.08’;
Fortunately, I had taken the advice on the install screen and made a snapshot of the database before doing the update. I suspect we can recover with no loss. I’ll try tomorrow morning, if needed. I was able to log back in as an administrator and disabled that module. Everything seems to work in other parts of the system. I just hope this posting keeps others from performing the upgrade until a replacement Free Learning module version is available.