Can't log in the game

Cant log in , in the Americas (US) server. Been so for 10 hours now. FIX BUG PLS. And I also checked my email account, and there was no penalty or anything. It just says an error has occurred when I try to log in game.

We’re currently under maintenance until around 10 AM PDT. There should be Maintenance Alert message on the Blizzard app regarding this. We also have a notice on Twitter here. If you’re still having issues once we’ve updated that the maintenance is over, please do let us know!