Accessed None 'XYZ' from node Construction Script in blueprint MyCharacter

So, I have this rather elaborate blueprint…

It is a “charging projectile” kinda script… mouseclick starts to charges, release and you fire.

The block that is making the error seems to be the box to the far right. Set actor transform.
If I unplug the target, there is no error, but obviously, I start moving my character if I do this.

Sooo annoying, what is wrong?

“Error Accessed None ‘CallFunc_GetController_ReturnValue’ from node Construction Script in”
Im having the same problem but with other function, can anyone help?