On the Cross Validated SE (and only on Cross Validated) I am unable to ask questions or answers. The error is simply "an error occurred, please try again". It has been going for a week now. I found other people that had the same problem, and I followed what they said "clear cached data". I did, nothing got solved. I even tried from another computer from home (different IP). No luck.
Growing desperate, I figured "I'll just delete my account on cross validated and try to rejoin the sub-community later. I'm new here anyway and only have 101 points".
But I am unable to delete my account. Exactly the same error : "an error occurred, please try again". EDIT 2: I was able to connect from a different browser and delete my account. I then rejoined the community but the problem did not go away. I should also specify that the tag suggestions (auto-complete) don't show up, nor does the list of possibly related questions (to avoid duplication) when I start writing the title of the question. The menus under the "recent achievement" and "recent inbox messages" do not work either, but the adjacent menus under "help" and "rest of stack echange sites" do work.
I have no other leads to explore... Any ideas ?
PS : I wanted to submit this question to Cross Validate Meta, but couldn't... "An error occurred submitting the question."
EDIT to answer Adam's comment: When I open the firefox console, I find these errors, but they do not appear at the same time as when I click on upvote or other. They seem to have appeared before : (see screenshot