My Ostim animation doesn't work in a strange way

[IdolaDeus]

When I start the scene, the animation seems to be fine and nothing occur.

But after a few seconds,or my attempt to switch to another pose, the camera will be locked above my character like third person view (free cam when animation starts).

Then after a few more seconds, the camera switch to first person view, and the model of my character just disappeared.

If I look around in such broken fpv I can see the model of arms lying in both side of my invisible body, acting like the pose when you forget to update FNIS behavior.

If I turn on tfc again, I can see my character model doesn't exist, just the npc doing her job by herself.

I have no idea about its reason. It suddenly came out of nowhere and I have checked that none of my recent added mods cause it.

Sincerely thanks to any possible help!

(by the way I'm not native English speaker so the text above might seems weird)