minecraft create new world crashes during MCreator Run server and client.

MCreator's minecraft from Run server and Client works but when I create a new world and I start it the minecraft shuts down, here I will show you an image and maybe some of you can recommend what to do if things like this happen or why my mod doesnt work whn I install it into my minecraft after exporting the mod from MCreator. So I would appreciate anyone's help in solving random bugs and crashes also Im new to this so I dont know much.