Push fails after upgrade from 4.49.0 to 4.50.2

[hbj]

Before opening, please confirm:

• I have installed the latest version of the Amplify CLI (see above), and confirmed that the issue still persists.
• I have searched for duplicate or closed issues.
• I have read the guide for submitting bug reports.
• I have done my best to include a minimal, self-contained set of instructions for consistently reproducing the issue.

How did you install the Amplify CLI?

npm i -g @aws-amplify/cli

If applicable, what version of Node.js are you using?

v12.18.4

Amplify CLI Version

4.50.2

What operating system are you using?

Mac

Amplify Categories

Not applicable

Amplify Commands

push

Describe the bug

After upgrading the CLI from 4.49.0 to 4.50.2, if I update a resource and push, the push fails with the following error message:

CREATE_FAILED APIGatewayAuthStack AWS::CloudFormation::Stack Tue May 11 2021 12:21:55 GMT+0100 (Central European Standard Time) Template format error: At least one Resources member must be defined.

I noticed that a new file amplify/backend/api/APIGatewayAuthStack.json with the following content has been created:

{
  "Description": "API Gateway policy stack created using Amplify CLI",
  "AWSTemplateFormatVersion": "2010-09-09",
  "Parameters": {
    "authRoleName": {
      "Type": "String"
    },
    "unauthRoleName": {
      "Type": "String"
    },
    "env": {
      "Type": "String"
    },
    "standupSlackBot": {
      "Type": "String"
    }
  },
  "Conditions": {
    "ShouldNotCreateEnvResources": {
      "Fn::Equals": [
        {
          "Ref": "env"
        },
        "NONE"
      ]
    }
  }
}

If I go back to 4.49.0 and delete that file, then the push works fine.

Expected behavior

Push works.

Reproduction steps

Reproduction might depend on the services you have in your stack. In my case I have a REST API, a GraphQL API, a user pool auth, a couple of functions, 2 DB storages a custom event bus and a custom event bridge.

1. upgrade the Amplify CLI for a version < 4.50 to 4.50.2
2. run amplify push --force as described in the documentation (this should work)
3. update a resource, e.g. a function
4. run amplify push (this should fail)

GraphQL schema(s)

No response

Log output

No response

Additional information

No response

[cjihrig]

Thank you for reporting this. Can you please share your REST API's api-params.json file via email at amplify-cli@amazon.com.

[rinosamakanata]

I'm experiencing the same problem with this bug.

[hbj]

Thank you for reporting this. Can you please share your REST API's api-params.json file via email at amplify-cli@amazon.com.

Done.

[github-actions]

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