Error: Access None when getting control rotation

[Roryyyyyyyyyy]

Hi, I recently updated my characters anim blueprint to rotate the back bone with my character controller and it works in game but when I leave the game I get the below error.

The blueprint area it is referring to is this:

Wondering if anyone could shed any light on this? Want to get rid of this in case it causes any bigger errors in the future!

Thanks

[Roryyyyyyyyyy]

Figured it out. For anyone interested, I just replaced the get controller->get controller rotation with just a get controller rotation dragged from the cast. Don’t quite understand why but there ya go!