Obviously, you are not a programmer of Moodle. Debug will show which scripts and line numbers of those scripts. Am not a programmer either ... but if others see those lines, they might jump in here with a solution for you.
Go to your site /admin/settings.php?section=debugging
Set to developer and leave it on until your site shows no errors.
Please respond to the questions asked in my previous post.
One additional thing to check ... web servers error logs ... look for entries in those logs related to what you were attempting to do. Share those back here as well.
If you don't do above, am afraid no one can help you but you!!!
One additional thing to check ... web servers error logs ... look for entries in those logs related to what you were attempting to do. Share those back here as well.
If you don't do above, am afraid no one can help you but you!!!
'SoS', Ken