MDL glitches "Something went wrong" and blank page

Since two days ago I get the error message "Something went wrong" when I edit my custom lists. It appears when I try to add titles and when I want to save the list. The issue was gone yesterday and now it reappeared. 

When I try to save my custom list it looks like this: 

Usually the editing page should close and just show the list but it doesn't close, so I need to open the custom list in another tab or window and see if the edits were saved or not. So far almost all edits were done, despite the error. 

Also yesterday MDL suddenly did not load for me. All MDL pages that I tried to open (no matter if main, forum or feeds) appeared as a white, blank page. A couple minutes later it worked like usual. 

Yeah still not solved completely and I also received an error when I sent a DM yesterday which I assume means the other user doesn't get a notification for those. 

 isang18:

If I may... "Something went wrong" for me turned out to be caused by network hiccups. I found a direct correlation between this error and the behaviour of a wonky piece of gear on my LAN.

Might be, but I'm not only getting the Something went wrong error but also other error pop ups. All other websites work smoothly for me, just MDL acts up. Also this error has been on MDL for quite some time, way before 2024.