WotLK Wow error: I can't enter the game

[Fede97]

Hello, I can't enter the game on my 3.3.5 wotlk patch that I've just downloaded from the website.
The game allows me to log with my account, and chose the right realm.
I can create characters, but as soon as I press "enter the game" to play, the game get wow error every single time:

ERROR #134 (0x85100086) Fatal Condition

(This error is not appearing if I play on Tbc or Cata expansions. Reloading PC isn't working, deleting Error Folder isn't working)

What can I do?

[skullatbash]

delete it and download "Wotlk (old)" from: https://www.warmane.com/download

[Fede97]

I will try right now. Thank you