Game crashes after I make a deck

I’ve been playing around with different decks, when I add and remove cards the game won’t start.
I get the error saying the game failed to connect.
Examples are my Pally deck and my warrior decks, no particular card does it, I’ve tried a few different

Kinda sucks cos I think I got a pretty good deck but I can’t connect to a player.
When I use a “premade” it works fine but when I customize it, it just won’t work.
Both in wild and standard…

This is the wrong sub-forum.

Your client probably allowed you to do something that isn’t allowed like put more than 30 cards in your deck. You don’t get an error right away, but instead when you try to play you get these unexplained errors.

This more frequently happens in tavern brawls when you paste in a deck code. In these cases usually the import feature bypasses the deck building checks, but the game won’t accept the deck you imported because it violate the brawl rules.