Game Mode bug

I’m working in a multiplayer game with 4 players, 1 can host game and the others 3 can join the game. Currently, im using Lan connection. The one that host game is server, and 3 others are client. The game mode in server is not bug, it can spawn my default pawn and posses it by the default controller, but the client game mode is bug, it can spawn default pawn, but the controller not posses my default pawn, instead of that, it posses unreal default pawn at location 0,0,0. And the bug not happen when i play in editor, but when i package the game and test it with my 2 pc, the bug happen in the pc that client side. Sorry for my bad english, but after doing research for 2 days, i still dont know how to fix this problem.