Building intake catalog: "Parser returns no valid assets" error

Technical
,
11 
%%time

builder = Cmip6Builder(
    path="/g/data/e14/afp599/access-esm/fs38_processed",
    ensemble=False # We could use this to pass multiple paths for different ensemble members "/g/data/e14/afp599/access-esm/post_processed_mw2",
).build()

I realise ensemble = False, but based on this I thought the ensemble members had to be in different folders.