BUG: I targeted the opponent's creature with a Banishing Light. In response, the opponent sacrificed the creature, resulting in them having no remaining nonland permanents. The game then required me to select a nonland permanent belonging to the opponent, which I could not do as there were no legal targets. I could not complete the required action, so the game ran through my timeouts and forfeited the game.
I was using the PC platform
The expected result was that my spell would have failed as I could not complete the required step.
I did not find a workaround