App scene no longer loading

I’m having trouble understanding what might be causing my
Quest app to fail.

I have been adding things to one scene and building and testing and it is
now at a point where it doesn’t load.

If I put it into SideQuest and run it the screen goes black.
I don’t get the UNITY splash screen and the scene never loads.

My OVR Metrics tool shows this:

I have started the scene with all gameobjects inactive and
it still wont load or initialise.

Does anybody know how I might be able to chase through the
project and understand what might be causing this crash?

The single scene APK is under 500MB so I would think that
would be okay?

Below is the metrics on the normal dashboard for comparison:

 Does anyone have any suggestions on how I can chase down what might be causing it to fall over now?