Animation with a Part welded using Motor6D does not replicate to server?

Theres nothing wrong with the animation and the welding script The animation works perfectly on the client

The welding script is done via a server script, while the animation player is done using a local script

Any idea what might cause this?

The "Camera" part on the client : https://imgur.com/CWadaIu

The "Camera" part on the server : https://imgur.com/xESOuwd

Only the "Camera" doesn't move with the animations, but it works with the character's limbs