Solution: Your executor is outdated. Update Krnl or Synapse X. Also, ensure you are not inside an "Intro" area (the first map). Wait until your character spawns completely.
Join the official Pet Simulator 1 game (Make sure it isn't a fake copy). Pet Sim 1 Script
Solution: The game updated its zone IDs. Search for an updated script. Do not use teleports from archived YouTube videos. Solution: Your executor is outdated