Failed to Validate optimized GLTF Data

Hey Guys, Its Fresh from Dev Digital and im running into some issues with the SDK and our 757, Every Time I export the cockpit and try to build the package I get the error shown below in the screenshot. I have fixed it by only exporting 1 item from the cockpit like shell but then I dont have the rest of it lol. Any suggestions?

Are you using a version 2 glTF?

Models are normally optimized by the package tool, so non-optimized could indicate you would have to package it first.

You might find more help on the development support answer hub:

I believe I am, Im using the gLTF 2.0 Exporter for MSFS.

And what do you mean by package it first?