Technical Wow error

[Class]

Hello,

Can you please tell me why do i keep getting wow error? Whats the reason behind it, because a week ago i was playing normally and i didnt get a single wow error. Yesterday i got 2 in about 5 mins, would like and explanation so i know whats the reason behind it.

Thanks in advance

[shhnedo]

You're a textbook crystal ball seeker. No details provided, no screenshots, nothing...