Senko aoi Rivals Items error

I was doing file editing and then couldn't start the game (didn't let me register nor log in) and got this error in the Server
Idk why but I don't have any client logs it just doesn't make them but it normally runs perfectly fine

So, I just cleared the error it seems that enableling the "Rival Items" in the "Senko aoi" mod was a mistake I disabled it and it now works perfectly fine