i am unable to get this error myself,
- do you have any status effects before the fight?
- does the error happen the moment the fight starts?
- what equipment does reid and sanya have equipped?
- is the fight against the crimson people
- is this with the newer version i uploaded
it might be easier if you send me your saves folder so i can see myself, can zip it and upload it to dropbox or something to send me, or if you have discord we can talk there for better communication and send it there