The run you are attempting to access is already complete and will not accept new groups.

The existing run is: https://cloud.cypress.io/project/abcd/runs/1

When a run finishes all of its groups, it waits for a configurable set of time before finally completing. You must add more groups during that time period.

The --group flag you passed was: foo
The --parallel flag you passed was: true

https://on.cypress.io/already-complete