I have good connections but why this happened

I was playing that super event the one that have omegamid and vorabook. And I play the one with hector the 30000 exp then this happens

Hi Vlad,

I am sorry for the issue.
This message suddenly showed up while you were playing? Was the game in the background or did you receive some notification from other apps?
What happened after this? Did you kill the game?

Thanks

I need to close the app so it will restart
And i dont have any background apps working while i was playing and also no notifications too