Validation errors

1. What is the issue? Please be detailed.

Error: ODK Validate Errors:
>> XForm is invalid. See above for the errors.
: Encountered a problem with display condition for node [${question}] at line: ( ${consent} , =1),, null

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

Result: Invalid
2. What steps can we take to reproduce this issue?

3. What have you tried to fix the issue?

4. Upload any forms or screenshots you can share publicly below.

Welcome to the ODK forum, @4268 ! We're glad you're here. When you get a chance, please introduce yourself on this forum thread. Thank you for adding a picture as your avatar because it helps build community!

You should look for the line in your survey that has the text mentioned in the error message and start your troubleshooting there.
Are you able to attach the XLSForm file here?