It's great to be able to load chat over https, however while chat.stackexchange.com and chat.stackoverflow.com work, chat.meta.stackexchange.com doesn't:
Attackers might be trying to steal your information from chat.meta.stackexchange.com
You attempted to reach chat.meta.stackexchange.com, but instead you actually reached a server identifying itself as chat.stackexchange.com. This may be cause by a misconfiguration on the server or by something more serious.
Is this a misconfiguration, or is something more serious afoot?