'Build All' caused my 3d objects to vanish. (modellib error)

I was working on an airport for the last several months ( KPWK), and built 3
hangars and Control Tower. I mistakenly pressed’ Build All’, in the Projecct
Editor window, rather than ‘Build package’ in the inspector window, and now
all my custom 3d objects have vanished from the scenery.

Package is loading but my created assets are missing.

I tried building the package again, (using the ‘build package’ button, making
sure the main airport is highlighted in blue, but still it seems the SDK is
not reading my modellib folder with the hangars and control tower 3d assets i
had built in blender.

Any way to fix this ?

see screenshot below. It says ’ failed to spawn the gltf lister for modellib’

Any idea what that means and how to fix it ?

thank you

Hello @kingnothing75 , It seems that you have an issue with KPWK-
I suggest you to check your exporter settings and try again to
export it properly Also, make sure that everything is correct in the object
xml Regards, Boris