Previous version: Not 100% sure, but it was Moodle 3.11.something
Current version: Moodle 4.0 (Build: 20220419)
Operating system: linux
Web Server: Apache 2.4.53
PHP version: 7.4.29
MySQL version: 10.3.34-MariaDB
Web Browser: Occurring in both Firefox version 99.0.1(64-bit) and Chrome version 101.0.4951.54(64-bit)
Over the weekend, I upgraded Moodle to Moodle 4.0.1. Today, I added two new students to Moodle, which worked fine. When I go to specific courses to add these students to them, I click the "Enrol users" button, and occasionally an error box pops up:
Most of the time nothing happens, only occasionally does the error box pop up. I am logged in as the site administrator. I have tried this on three different computers on two different networks. Anyone else having this problem? How do I resolve it?