Crash on opening chest

[ZeeOcho]

I am getting a crash when opening a chest.

It happens with only basemod and FightPredictor active. I startet the run with additional mods, one of those adding a custom relic which is used for reminding the player of the keys (keyreminder). After restarting without FightPredictor, opening the chest, entering the next room and restart again with FightPredictor, everything is fine.

I have attached the saves folder and the SendToDevs-folder. I hope this helps.

SavesAndSendToDevs.zip