Help with Point Click Movement Please

Alright so I am trying to make a movement system similar to old school RuneScape where the world is basically divides into a grid and your movement is between the tiles basically. I tried to use the basic structure from the top-down template for movement. The node “Simple Move To” is inaccurate as can be.

https://gyazo.com/3cdcb4e4b2e6941d10b424ee8f31708e

I have ready to use AI Controlelrs and I have tried but every time i try to set up Ai controller and everything I get a error : accessed non trying to read ai controller. In all honestly this will be multiplayer and I don’t know if making all the characters AI is the correct way to do this. All i want is to move to the exact location I want because I am converting my Mouse click locations to the center location of the tile clicked on and all that works perfectly. Just when I tell my player to go there it does not work.