'https://api.myob.com/accountright' from origin 'http://localhost:8080' has been blocked by CORS policy

caremeninfo, 

Thanks for reaching out, I am not overly familiar with the Cors policy however from what I've found online this seems to be a Javascript error that occurs when the Same Origin Policy is preventing the response form from being received.

To resolve this you would need to return CORS headers in your response.

CORS - https://developer.mozilla.org/en-US/docs/Glossary/CORS
CORS errors - https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS/Errors

If you have any questions you can create a support request with us HERE.