M2M Request error handling

[cwdcwd]

This line doesn't return helpful details as to issues. However, I've seen the following example in error responses that I think we should pass along:

{ 
  error: 'access_denied',
  error_description: 'Service not enabled within domain: http://topcoder-newauth.auth0.com/' } \
}

[cwdcwd]

@sachin-maheshwari thoughts on the above?

[sachin-maheshwari]

@cwdcwd sorry i missed this..i'll look into this.

[jmgasper]

@cwdcwd 🤦‍♂ I think this is what I ran into yesterday. Not sure a duplicate ticket is going to help. The issue I had trouble with was

tc-core-library-js/lib/auth/m2m.js

Line 70 in f453529

reject(new Error('Unknown Error'))

That "Unknown error" has no details, making it take way too long to properly debug what was going on.

[cwdcwd]

@sachin-maheshwari think we can get some one on this?