Packaging problem: LoadErrors:

I try to package my project. Only error which i get is: LoadErrors: New page: Loading map: Lawnmower.umap and also same error with other map. Where can try to find solution

And for more information. last time it was packaged correctly only changes was one small spawn blueprint, but I also tried to fix it to version when it works, but still not packaging works

PROBLEM SOLVED. I Migrate hole project to new empty project and packaged. No errors