Trying to make my own environment. It worked but I reworked the model, added lights, some external shaders into the mix (Poiyomi). Well, I removed the Poiyomi shaders for safety, only using VRM10 and the Standard Unity PBR shaders.

The issue is, Warudo doesn't open the environment and says:
"Failed to load environment.

There are no scenes in the file"

So seems like for some reason, the environment isn't exported.
I have all the files in my mod's directory, the scene is called "Environment". I'm getting clueless. Checked out so many things and I don't get what went wrong.