Deploy Error: ODK Validate Errors: [Fatal Error] :350:18: An invalid XML character (Unicode: 0x8) was found in the element content of the document. >> XML is invalid

User Support Form Building
1

Hi, I hope you can assist with this validation error:

ODK Validate Errors: [Fatal Error] :350:18: An invalid XML character (Unicode: 0x8) was found in the element content of the document. >> XML is invalid. See above for the errors. org.xml.sax.SAXParseException; lineNumber: 350; columnNumber: 18; An invalid XML character (Unicode: 0x8) was found in the element content of the document. The following files failed validation: ${tmp3lo64rys} Result: InvalidProcessing: Questionnaire_d2.xlsx…

2

Same issue when I tried with the online validation tool:

Error: ODK Validate Errors:
[Fatal Error] :1:11190: An invalid XML character (Unicode: 0x8) was found in the element content of the document. >> XML is invalid. See above for the errors.
org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 11190; An invalid XML character (Unicode: 0x8) was found in the element content of the document.

The following files failed validation:
${Questionnaire_d2}.xml

Result: Invalid

3

Welcome to the community, @lhgiang! Would you mind sharing your xlsform with the community? The community should be able to help you identify the issue that is causing the error message.