Help debugging JSON encode issue in WP

Job ID: 32529083

Budget: $10 – $30 AUD

I have a simple ajax request which is working correctly, the data is being correctly transferred but I receive an error in the console "Uncaught SyntaxError: Unexpected token A in JSON at position 0" which is stopping the jQuery rendering the result. I need some help debugging over chrome remote desktop
Related categories: PHP JavaScript AJAX WordPress jQuery / Prototype