Skysphere missing Mesh/Material

I noticed when packaging my game that the lighting was very very dark compared to in editor or standalone, I didn’t really understand why except today I finally realised why, in the editor/standalone if I remove the skysphere mesh from the skysphere it looks exactly the same as it does in the packaged game, which made me thinkg the skysphere mesh is missing in a packaged game.
After looking again at the packaged game and really studying the sky I did notice behind the clouds there was what appeared to be a dome that was completely missing a material. So that now makes me think the mesh is there but the material isn’t being added.
I’m using the default skysphere from the engine.
Has anyone else experienced a missing skysphere mesh / material when packaging a game and know how to fix the issue?