"There was an error starting your game" in Duels

Bug Report
1

Hello.
PC. Popup error: “There was an error starting your game. Please wait a few minutes and start a game” on starting a game of Duels after finding opponent. Already had two succesfull matches but on third - this error always pop up, cant start. Tried waiting a day, didnt help. Obviously tried rebooting a game and battle.net desktop app.
No problem with Ranked, Battlegrounds or Arena. I assume that the deck is buged.
Found a lot of similar reports, but there were no answers

2

I have the same issue…

3
4

Also experiencing this, and it’s happening in Casual duels, not Heroic. The in-client help suggests this means there is an illegal card in the deck, but this is happening with a completely fresh and confirmed legal deck, and it’s not possible to either retire or edit the deck, so the proposed fixes don’t work.

Confirmed to be happening both on mobile and desktop. Screenshot of the deck itself can be found here https://i.imgur.com/tuPYsk9.png (ETC band contains Counterfeit Coin, Steamcleaner, Pyrotechnician), error in action here http://i.imgur.com/HuvoPgZ.png

5

Yo perdi con personas que creo que estaban haciendo trampa durante esta semana en Duelos.