User blog comment:Gmo666/There seems to be a problem with your login session; this action has been canceled as a precaution against session hijacking. Go back to the previous page, reload that page and then try again./@comment-34888194-20191019123215

If you received a session hijacking message, it's to prevent someone from getting access to your account to prevent hacking. Thought most of the time it's false positives, it's actually better than having no protection at all, especially when someone tries to use your account and use the account as "you". That's an extra protection by MediaWiki when something isn't right. Try clear your cache and cookies, log back in, and see if you get this error message again.