We have recently upgraded our LMS from 2.9 to 3.7.1+
While we were in 2.9 version, we were able to conduct online exams successfully for over 270 students at any given time.
but after the upgrade 3.7.1+, we are facing difficulties in logging to moodle (attached error message) and loading pages of the lms.
This error comes as soon as users/students trying to login to moodle. (generally when there sre 30 logins or more at once)
Can you please let us know whether there is any connection of upgrade of lms with this issue?