can i change last morhped into mob in files or somewhere because everytime i join i just crash because i am morphed as that mob "java.lang.IllegalArgumentException: No model for layer pet_cemetery:zombie_wolf#main"

You can use a tool like NBTEditor to edit your player data. You'll need to delete the "CurrentShape" tag.
Alternatively, starting your game without the "pet_cemetery" mod, opening the world and then morphing into another entity should fix it. (You can reinstall "pet_cemetery" afterwards).