HTML5 package

Hi, I have a scene that I made on blender, that I imported in glb on unreal 4.27.2, to be able to package my project in html5 and put it on my server!

So after adding my project in the content browser as a static mesh, I drag it into my scene and then I try to export the project, except that once on the web I don’t see my static mesh!

And in the f12 console I have : Project file not found: …/…/…/P10/P10.uproject

What is the problem ? Blender ? Glb ? Unreal ?

Help me please !