UnassignedReferenceException: The variable queuePositions of AttractionQueueVisualModel has not been assigned.
You probably need to assign the queuePositions variable of the AttractionQueueVisualModel script in the inspector.
UnityEngine.Transform.get_position () <0x15f1492d0 + 0x0006a> in <19d5ba237c6b4d44924b3df643fae0ec>:0
EvilParkCore.Attractions.AttractionControllerBase.QueuePosition (System.Int32 queueOrder) (at Assets/Scripts/EvilParkCore/Attractions/AttractionControllerBase.cs:206)
EvilParkCore.Attractions.AttractionControllerBase+<WaitAndGoToAttraction>d__35.MoveNext () (at Assets/Scripts/EvilParkCore/Attractions/AttractionControllerBase.cs:190)
UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) (at /Users/builduser/buildslave/unity/build/Runtime/Export/Scripting/Coroutines.cs:17)