Figma components disappearing while using the app offline

I created a simple app which can work offline. I was using Figma for the UI and when I use it offline many things are not visible !!! like there was a background image I used which was imported from figma which was not visible, also one button I created form figma got disappeared !!..
Why is this happening ?! All the thunkable components appear properly but some of the files I imported from figma has this issue !!!