Trying to play on JoiPlay and I'm having this set of errors pop up with all human fights and rarely on random spirit fights
Sorry to hear this. Based on your description, I would guess that some of the game's plugins are not cooperating with the JoiPlay emulator. Unfortunately, I'm unable to test the game on Android so I don't think I'll be able to resolve the issue. Hopefully you have better luck with other games from the jam.
The game is trying to pull an image that isn't there. Joiplay has largely been abandoned, so the bugs will get worse and worse over time. That and Joiplay isn't playable on Mac ios system, regardless if it's been converted to windows.
Only way for this to be fixed now is for the dev to either update the game, or place a warning to do not play on joiplay,