ERROR forward vector

OwningCharacter->GetController()->GetActorForwardVector()

ERROR

function “AController::GetActorForwardVector” (declared at line 400 of “D:\Program Files\Epic Games\UE_4.26\Engine\Source\Runtime\Engine\Classes\GameFramework/Controller.h”) is inaccessible

Controller hides a lot of actor transform functions, that is why it’s not accessible.
Try using GetActorForwardVector on that specific actor instead.

OwningCharacter->GetActorForwardVector()