User Tiago_Amaral reported that the User Fields page in their Discourse installation was blank, despite disabling a recently installed plugin and adjusting CSP settings. The console showed multiple 500 errors, with one pointing to a ProcourseInstaller plugin issue Tiago_Amaral. David suggested removing the plugin completely, but the issue persisted. After further investigation, Tiago_Amaral discovered that custom CSS modifications were causing the problem Tiago_Amaral, resolving the issue.
I’m thinking that this may be related to this thing appearing in the console: [Deprecation] ::-webkit-details-marker pseudo element selector is deprecated. Please use ::marker instead. See Chrome Platform Status for more details.
I think it’s unlikely that the CSS deprecation is causing this issue. The concerning thing in your screenshots are the red “status of 500” errors. The server should never return 500 errors when things are working correctly.
I suspect the cause is the ProcourseInstaller error (second from bottom in your logs screenshot). It looks like that plugin is no longer working. I’d recommend you remove it