“TypeError” Form will not submit

I’m receiving the error below upon submitting some forms, but not others. This form in part of a multi-step, with conditional sections.

To start the form flow go to: http://inscle.flywheelsites.com/personal/auto/motorcycle/

TypeError: Cannot read properties of null (reading 'querySelector')
    at i (index.js?ver=5.4.2:1)
    at Array.forEach (<anonymous>)
    at index.js?ver=5.4.2:1
(anonymous)	@	index.js?ver=5.4.2:1
Promise.catch (async)		
v	@	index.js?ver=5.4.2:1
wpcf7.submit	@	cf7msm.min.js?ver=4.1.7:1
(anonymous)	@	index.js?ver=5.4.2:1

The page I need help with: [log in to see the link]