Host and client issue

Hi i have a issue with my game, the host spawn the random map and after the new player who has connected doesn't have the map on his client any ideas ? I think the issue is that the masterclient spawn the gameobject but it's not sync with the client which don't have the gameobjects on his client.

https://ibb.co/kQSh5K
https://ibb.co/iKuZKe