As of Dec 3rd, at 23:54 hours, i can’t get into the game because of this error. After googling, I came across the forums and this topic. Maybe the game server is down. Since you guys too can’t get in, it looks like a server side issue. Maybe support ppl needs to restart it? I am glad its not an issue on my pc’s end at least, as I was starting to pull my hair out from frustration.
PS: I tried reinstalling, validating game files via steam, I tried fixes from these pages.
IN this one, the issue was resolved by the game support team sending some logs to their internet service provider.