Lottie animation not showing on the preview

Hi, I have a problem with my after effect and lottie extension.
I made an animation with some ai layers, and then transformed them into some shape layers. Then I put them into 3d layers and created a camera that zoom onto my layers.
When I export my animation the render is totally transparent and I don’t understand why, can someone help me please I absolutely need this animation for school and i’m kind of desperate.

my render looks like this:

I ran into the same problem as you. Has it been solved?