"Workflow Schema is Invalid" Error on Deploy Despite Successful Tests

Hi everyone,
I'm facing a problem when trying to deploy my workflow on BuildShip.

Internal tests pass successfully.

Documents are created correctly in Firestore.

All inputs (authIdToken, body, userId, profileId, status, generatedAt, updatedAt) are properly mapped.

The body JSON is correctly formatted.

However, when I deploy, I get this error:

Failed: Internal error, workflow schema is invalid.
Error in following nodes: Create Document is invalid.

I already validated the mappings, variables, and output schema.
The error seems related to the deploy process, not the flow setup.

Has anyone faced something similar?
Any ideas on what might be causing this?

Thanks a lot for any help!