Error "schema input must have at least one of “sdl” or “hash”" when publishing

[bennyKY]

Description

running publish command with schema parameter:

pnpx -p @apollo/rover rover subgraph publish application-server@stagingBackoffice --name=matched-propertiesBackoffice --routing-url=http://matched-properties-ts-nyc:6002/ --schema=src/server/federation/backoffice/common.graphql 

we are getting this error:
“error: Partial schema input must have at least one of “sdl” or “hash””.
It doesn't have error code (like other errors).

Environment

Rover Info:
Version: 0.1.10
Install Location: /Users/bennykachanovsky/.rover/bin/rover
OS: Mac OS 11.4.0 [64-bit]
Shell: /usr/local/bin/bash

[EverlastingBugstopper]

Thanks for the report @bennyKY - it looks to me like this occurs whenever the proposed schema file is completely empty. We can definitely have a better error message here, but for now I'd recommend investigating your src/srver/federation/backoffice/common.graphql file and ensure it actually contains a schema prior to running this command.