Issue with Teams app manifest (commands section)

Question

Hi,

I am having an issue with my Teams app manifest. For some reasomn, when I submit it, it fails and I get the error message: "App definition with message handler must have command" ... looks like something that is similar to what was described here https://stackoverflow.com/questions/67393384/how-can-i-provide-an-ms-teams-app-to-provide-link-unfurling-and-nothing-more (no solution)
Right now, it looks like:

Answer 1

@ChetanSharmamsft - Thanks for the suggestion. I used https://www.jsonschemavalidator.net/ which resulted in "No errors found. JSON validates against the schema"

Answer 2

@Took Tek - Could you please validate your manifest schema with the actual manifest schema:
Link: Manifest Schema Reference