I have two levels: Init and Bus.
In Init Blueprint, on collision with door I load the Bus level:

The problem is, whenever I use GetPlayerController in Bus Level Blueprint:

I get Accessed None trying to read property CallFucn_GetPlayerController_ReturnValue, so my GetPlayerController returns NULL.
Why is so? The same Level Blueprint works fine in Init Level.
The GetPlayerController return NULL in Bus Level Blueprint both when I go there from Init Level (with Open Level) and when I run Bus Level directly in Editor.