Character look at mouse - Multiplayer Replication

I am pretty new to network multiplayer in ue4 so I just can’t seem to figure out this problem.
So I have a player character that is controlled by a player controller. In my pawn I am doing basic things like w,a,s,d movement for a 2d top down character. I looked up some tutorials for “Character look at mouse” and used some different methods. (current setup in Image below)

I think I did all the RPC stuff for replicating right, with the custom events set to multicast and replicate to server, but for some reason I am not getting correct replication from my clients character to my server character (I am using a listen server btw)

When I move my mouse to rotate the player in my client window, it doesn’t replicate to the server, the rotation of the server however works fine when replicated to the client…

I also get this error message but don’t understand whats causing the problem with the “get controlled pawn”