Unclear error message when there is a validation error in custom-policies.json

[edwardfoyle]

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.
• I have removed any sensitive information from my code snippets and submission.

How did you install the Amplify CLI?

npm

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

14

Amplify CLI Version

latest

What operating system are you using?

mac

Did you make any manual changes to the cloud resources managed by Amplify? Please describe the changes made.

no

Amplify Categories

function

Amplify Commands

push

Describe the bug

When there is a validation error in a custom-policies.json file for a function, the message does not make it obvious what the error is.

Expected behavior

A clear error message of the validation failure

Reproduction steps

1. amplify init -y
2. amplify add function
3. update custom-policies.json and specify a string instead of an array for Resource
4. amplify push -y
5. Observe unclear error message: should be array

GraphQL schema(s)

# Put schemas below this line

Log output

# Put your logs below this line

Additional information

No response