Hey, I am using pulumi with an S3 backend. While renaming my stack pulumi apparently "lost" it (stack ls didn't show anything). So I am trying to import a backup I downloaded from S3. But when I run

stack init staging

and

stack import --file staging.json.bak

pulumi says:

error: could not deserialize deployment: unexpected end of JSON input

Any idea how to debug this or what to try next? I am lost.

Thanks, that really helps