Access None Error

hey, I have a bunch of access none errors, I’ve fixed a few of them. some I kinda understood how I did it and others I just goofed till it worked. Can someone please explain how to fix these errors just in general, cuz I keep watching videos and each one is for a different problem of it, and I’m loosing the general fix of the problem in their explanations. if so that’d be amazing thank you very much!

Can you show exactly where it’s giving the error? Share prints. What are you trying to communicate.

well its a few different ones, i kinda understand that its looking for values that arent there and needs some. is there a general explanation for the issue, cuz i know im gonna deal with a different one down the line. this one scecifically is a mesh variable that has no value and i dont know how to give it