CUMULUS app requires workflows.yml.

Step-by-step guide

workflows.yml is the file that associates states and lambda functions.

  1. Add workflow name at the top.
  2. Specify StartAt: StartStatus
  3. Add States. Of course, you need to add StartStatus first.

Make sure that lambda function defined in Resource: is defined in lambdas.yml.

If you don't have workflows.yml file, you will get the following error:

Cannot convert undefined or null to object