Somebody help me

Guys, do you know what this is?

I put fractal noise on the new composition
And I brought the composition as a file to work on
I pressed the preview as usual
Only the new composition plays, and the other file images are gone
I've been through this since the update.

I've done everything I can to clean up and re-install the cache(purge), the same phenomenon hasn't been fixed for days
I didn't change the settings in particular
Previously, you could see the entire file image and it was previewed
Now, only the new composition will be previewed
And even when rendered, only the same new composition is printed out;;;;;
I don't know what's causing it
I use MacBook Air and because of this problem, I deleted all the After Effects documents in the MacBook and reinstalled them, but they're still not working. Please save me.