error was as follows:
Shader [Shader Id 4 LitShader-forward-proc] requires texture sampler [uSceneColorMap] which has not been set, while rendering [Pass:RenderPassForward | Camera | World(TRANSP) | Node: UnstableStarref_2_0 | Material: material_1 | UnstableStarref_2_0]
any help would be appreciated.