Player isn't accessible with multiple clients

Development Programming & Scripting Multiplayer & Networking
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1

HI,
I’m new to UE4 and trying to get a basic Twin Stick multiplayer game working. Using only 1 client works great. However, when trying to test with 2 clients, Visual Studio breaks when accessing Player due to an access violation.

bool APlayerController::GetMousePosition(float& LocationX, float& LocationY) const
{
	bool bGotMousePosition = false;
	ULocalPlayer* LocalPlayer = Cast<ULocalPlayer>(Player); // crashes here as it can't access Player

	if (LocalPlayer)
	{
		FVector2D MousePosition;
		
		bGotMousePosition = LocalPlayer->ViewportClient->GetMousePosition(MousePosition);

		if (bGotMousePosition)
		{
			LocationX = MousePosition.X;
			LocationY = MousePosition.Y;
		}
	}

	return bGotMousePosition;
}

My current setup is that each player is a Pawn, which is what I’d like to replicate… but I can’t figure out why Player and wouldn’t be accessible with multiple clients.

I’ve read the networking, pawn and controller docs and looked at a number of questions, but haven’t managed to figure out the proper logic. Any help would be greatly appreciated.

Thanks