So I've made my first map, learned how to share it with others, etc etc. I have only one problem: I cannot get the portal to work. I've set the coordinates based on placed objects so when a character spawns, it spawns in the right place. However, the portal back does not exist! At (0,0), it shows the name as though the portal is there, but I cannot find it. How do I make characters less doomed to being stranded?