serverless-kubeless: unable to call or update function

I deployed a Python function to a k8s cluster, but cannot call it directly, or update it after making changes.

However, I can call the function just fine from kubeless directly: $ kubeless function call hello --data '{"echo": "echo echo"}' {"body": "{\"message\": \"Go Serverless v1.0! Your function executed successfully!\", \"input\": {\"echo\": \"echo echo\"}}", "statusCode": 200}

Calling from serverless, however, fails:

$ serverless invoke --function hello --data '{"echo": "echo echo"}' ... Serverless: Calling function: hello... Error -------------------------------------------------- Service Unavailable

If I try to re-deploy after a change to the function:

$ serverless deploy function -f hello Serverless: Redeploying hello... Error -------------------------------------------------- Found errors while deploying the given functions: Error: Unable to update the function hello. Received: Code: 422 Message: functions.k8s.io "hello" is invalid: metadata.resourceVersion: Invalid value: 0x0: must be specified for an update