CircleCI integration - Parse error

I'm trying to integrate with CircleCI, all went fine except for an error I now get on the job defined in the orb:

sumologic/workflow-collector

The error is the following:

looping: 3
JOB: "deploy-to-prod"
JOB NUM: null
STATUS: "blocked"
parse error: Invalid numeric literal at line 1, column 10
Exited with code 4

I had an approval job on the CircleCI workflow, and apparently that's providing a null field to Sumo Logic and I'm struggling a lot to find the same issue elsewhere or at least a way to debug it. I removed the approval job from the workflow but I'm still getting the same error.