`kerchunk_method="auto"` may be broken

[samlamont]

From Katie:

I am fetching extended AnA forcing for our flash flood project for a 10-month period leading up to Helene (for model spin up for hindcasting). The "auto" option for kerchunk_method failed with error "Exception: ReferenceNotReachable()". I switched to "local" and it's working. I thought 'auto' would switch to local if the zarrs are not found on AWS - that might not be working, FYI.

stack trace: https://researchtriangleinstitute-my.sharepoint.com/:w:/g/personal/kvanwerkhoven_rti_org/Eb3aCaZhq2dIsFxguMf3qLEBy3b7vODkVbVyNYQecw1EtQ?e=Tbv4dC