Platform, device version and operating system
PC Windows 10
Screenshot or image
What you were expecting to happen, and what actually happened
After i won a battle in PvP and Guildwars this errormessage shown up.
How often does this happen? When did it begin happening?
I tried 2 guildwarbattle and became this error and tried it in PvP and got same error after each battle.
Steps to make it happen again
Just start a match as usual.