I have the same error. Hard reset phone, deleted & reinstalled from app store. Still same issue. Also, that is the client version not the error code that we’re all seeing. It’s showing you the version of the client that is erroring out in some way (some backend validation task)
My guess is the same as @joemod in-game update changed the version, but blizz failed to update the validation on the backend?
- Iphone 13 pro max