Go to the BP_ThirdPerson_Anim then go to the Calculate Aim Offset function and create a new Local Variable called LookAtRotationL and set its type to Rotator.

Add the highlighted nodes shown in the images below, locations at the top of the images.

Go to the BP_FirstPersonBody_Anim then go to the Calculate Aim Offset function and create a new Local Variable called LookAtRotationL and set its type to Rotator.

Add the highlighted nodes shown in the images below, locations at the top of the images.

Next rename the AimOffset variable to ProceduralAimOffset do this in both the BP_FirstPersonBody_Anim and the BP_ThirdPerson_Anim blueprints. Note this isnt required but better describes the variables function.

Next go to the BP_SGKMasterCharacter and delete the highlighted code shown below.

You can then delete the LookAtRotation and LastLookAtRotation variables from the BP_SGKMasterCharacter blueprint.