UE5 Auto generate uv Lightmapping doesn't work

Hi there,
I have imported a few meshes as dea format, but it doesn’t generate a uv lightmap.
Its really small but i dont think that is the problem.
Im using ue5.

The lightmap should look roughly like the UVs. Do you have UVs in channel 0?

No i dont have UVs at all…

I fixed it.
You have to activate the Modelling Editing Plugin. Then select your mesh in the mode of the Plugin scroll down and then go to uvs and click unwrapp.
Now you have uvs