Syntax error in firefox

Hi there!
I’ve just started the HTML course and first thing to do is a h1 title. but there’s a syntax error with the following message: SyntaxError: invalid regular expression flag s
and this is even before i type anything.
I tried the same thing in google chrome and it works just fine.
is anyone having the same issue. Should i switch to chrome or is there a way to fix the bug?
i’ve got the latest version of Firefox
Thanks for any advice :slight_smile:

this was an error that was happening after one of the last few updates, updating again your browser should solve it