Cannot communicate securely with peer: no common encryption algorithm(s).
(Error code: ssl_error_no_cypher_overlap)
Pretty much what it says on the tin.
You've got out of date SSL libraries.
Time to do some software updates on your machine. Just because its Linux doesn't mean it doesn't need updates....
If you are up to date on your machine, then try running Firefox with a clean new user profile (
see here for instructions) and see if that helps.
You might find instructions out there on the internet telling you to fiddle with "about
:config" to fix this problem ... but I say ... DON'T DO IT !!! You weaken your security by following those poorly thought out instructions !