Error: Detected the creation of more than one LevelScriptActor (/Game/ThirdPerson/Maps/ThirdPersonMap.ThirdPersonMap:PersistentLevel.ThirdPersonMap_C_24, /Game/ThirdPerson/Maps/ThirdPersonMap.ThirdPersonMap:PersistentLevel.ThirdPersonMap_C_0) within the same outer. This can lead to duplicate level blueprint operations during play.
Hey @Enigma13! So it’s looking like you have duplicate LevelScriptActors! There may be more blocking you, but one thing at a time as fixing one thing can break or fix other things 
Here’s another thread where someone had a similar issue, many causes and fixes abound here!