glTF File Will Not Load 1 Texture

I’m importing a glTF file but I’m having issues with a texture not loading. Specifically, the cloud texture in my Earth model. Here’s my Blender file:
earth.blend (2.0 MB)

Can anyone tell me what I’m doing wrong? I’m using and the other textures are showing up but the one.

The “Add” node will not export from Blender, you’ll need a single texture per socket on the Principled BSDF. See:

Ahh, thank you that worked! I’ll have to play around with this.