My website has over 600 Users (Joomla) and when I try to adjust their user permissions (Super user, admin etc) it returns the following message:
500 JM_BAD_REQUEST (The requested resource could not be found.)
I have recently updated to Joomla! 3.9.15 Stable [ Amani ] 27-January-2020 15:00 GMT but the problem existed before the update.
Hi there, I am expert in Joomla and interested to fix the error "JM_BAD_REQUEST". I am here, please come on chat, lets see if we can figure this out now. Regards Ahmed