Something broke the parser. See above for a hint. Can't set data value for node that has children

I could not deploy my form. It appears message that “your form cannot be deployed because it contains errors: ODK Validate Errors: >> Something broke the parser. See above for a hint. Can’t set data value for node that has children! The following files failed validation: ${tmpkajm4h17} Result: Invalid”
What is the problem?
Many thanks for helping me.

Welcome @childfundcambo,
Did you check the form with the online validator?

Could you, please, provide the related extract of your form here?
@Kal_Lam can probably allow file upload for you (as new user).

Many thanks. I do not know how to check with the online validator.
Please, help. Here is my form.

You open the validator link above and upload your XLSForm. (If needed you can download your form from the KoboToolbox (project/form menu) as .xlsx Excel file first.

As new user you need to get the right to upload files here from the core team first, e.g. @Kal_Lam.