Can't start WoW from Battle.net app

So I don’t know what happened. The whole morning I was able to play the game, stopped around 3pm and logged out in Dornogal. I wanted to log in for the raid, but every time I click PLAY in the Battle.net app it says “The application encountered an unexpected error”. I restarted my PC, did a scan and repair, but nothing helped. Same with on Classic. I deleted the cache folder as well, still no help.

Does anybody have a solution?

Which cache folders did you delete ?

Same here I cant play the game. I think its a sign for unsub. I am bored anyway. I dont know its wow or diablo like game. endless grind grind grind…