I saw this message a few times sometime ago (can’t remember when exactly), but I did get all the rewards then an this error disappeared just as suddenly as it had showed up and I never saw it again.
It was the same as this one:
I saw this message a few times sometime ago (can’t remember when exactly), but I did get all the rewards then an this error disappeared just as suddenly as it had showed up and I never saw it again.
It was the same as this one: