Modes : offline_url should be different from offline_url and not empty

When I run rosetta-cli check:spec against my implementation, I’m getting the error as in the title. I honestly don’t understand it. What’s modes API? Documentation does not seem to specify it… Is it possible to see the details of the request rosetta-cli is doing to run this test? Any details on the expected answer? Also the idea of offline_url (whatever it might be) being different from itself seems rather contradictory. Is it a typo?

rosetta-cli/check_spec_utils.go at v0.10.0 · coinbase/rosetta-cli · GitHub ya typo. should be online_url and offline_url