I new to Kobo and am getting the error shown below. How can I resolve it?

Please help me out. I new to Kobo and am getting the error shown below. How can I resolve it?

your form cannot be deployed because it contains errors:

ODK Validate Errors: >> Something broke the parser. See above for a hint. Error evaluating field ‘location’ (${location}[1]): The problem was located in Calculate expression for ${location} XPath evaluation: cannot handle function ‘pull’ Caused by: org.javarosa.xpath.XPathUnhandledException: The problem was located in Calculate expression for ${location} XPath evaluation: cannot handle function ‘pull’ … 10 more The following files failed validation: ${tmphf5h0qz8} Result: Invalid

@Katuwa, you should always be able to identify syntax issues by validating your XLSForm through this online validator.