I'm installing Moodle from scratch and have run into this error directly after plugin installation (web installer), there's not much info to be had, unfortunately:
Coding error detected, it must be fixed by a programmer: Invalid property requested, or the property does not has a default value.
URL is mymoodlesite.com/moodle/user/editadvanced.php?
What do I do?
(Edited by Helen Foster to amend URL - original submission Tuesday, 18 February 2020, 5:31 AM)
Was the plugin compatible with your version of Moodle?
Suggest moving the plugin folder outside of Moodle code then navigate to /admin/search.php via URL line.
Further suggest, If the plugin install attempt managed to touch the DB, you'll have to navigate to the screen where un-installing link shows.
If plugin were a mod: /admin/modules.php
If plugin were a block: /admin/blocks.php
'SoS', Ken
Are you installing a new site or upgrading a site?
What version of Moodle are you installing or upgrading to?
What version of PHP is installed on the server?
If you're upgrading then try adding the lines for debugging to config.php (also shown here). This should show more details with the error.
