Unexpected KoBoCAT error

Unexpected KoBoCAT error 400: b’{“detail”:“ODK Validate Errors:\n[Fatal Error] :1170:90: An invalid XML character (Unicode: 0x2) was found in the element content of the document.\n\n>> XML is invalid. See above for the errors.\norg.xml.sax.SAXParseException; lineNumber: 1170; columnNumber: 90; An invalid XML character (Unicode: 0x2) was found in the element content of the document.\n\nResult: Invalid”}’

Welcome to the community, @Twumasi! Would you mind validating your xlsform through this online validator? It should help you identify the syntax errors that are present within your xlsform.