Mario Kart wii RMCP01 code crash

[dehepicyeeter]

Name: Always Have Item
hello when i enable the code it works not very weel at first time because i wanted to have a specific item but instead of that i got a greenshell and when the race is starting it crashes
and i get this error message

https://gyazo.com/54e0deb302528324469165631a459b5d