I have like 10 projects and they were all working fine but suddenly assets are invisible, any solution?
That’s a pic of how it looks:
There is that (show) button in viewport on top, look there.
And google for unreal editor keybindings, you could have pressed something that hides stuff.
Oh, and see if unlit mode shows anything. If it shows your level in unlit, you need to fix light or rebuild.