After restarting my computer and trying to log in to my wiki, I got the following message:
There appears to be a problem with your login session. Your operation has been stopped as a precaution against a security risk (which consists of possible "hijacking" of this session). Try sending the form again.
What mechanism causes this?
Is it the server? A MediaWiki setting? Or is it browser related?
MediaWiki version 1.39
Browser Firefox 124
URL http://rotor.harry-arends.nl/index.php?title=Speciaal:Aanmelden&returnto=Hoofdpagina