I decided to challenge this Steel type Gym I found and I encountered multiple errors when fighting the Leader. The first of which is the one I encountered every time I battled him, he sends out a Bastiodon and on his second turn it says an error occurred and the battle ends. The second error I discovered is he sent out a Lucario and while trying to battle it I looked at it's level on the nameplate. The level stated on the actual battle thing at the top right corner said level 77 but, the nameplate says level 99. Because of this I can't beat the Lucario.
Thanks for looking at my bug report.