System is Mint Mate 19.2.
Ran several updates about 10 days ago:
Yesterday on attempting to log into a familiar site, had this error message:
Next tried logging in using a different computer, got in as expected, no issues. Looks like one of the updates is causing a problem. Can I uninstall these updates? No idea which one has caused this problem, perhaps I could remove one at a time until the log-in works?