Joining my worlds result in an infinite Locating Servbe

Whenever a friend tries to join any of my worlds, they will have the 'Locating Server' screen forever. I've tried everything to fix it, but I cannot get anything to work.

Steps to Reproduce:

  1. Load up a world
  2. Get a friend to join
  3. They will have the screen stuck

Observed Results:

Anyone that joins will always have the Locating Server screen, but will appear in the player list

Expected Results:

They should be able to join without any issues.