Cannot create property 'utils' [RESOLVED]

After upgrading the Gravity Forms plugin from version 2.6.9 to version 2.7.6 (starting with version 2.7.0), I started getting a fatal error after clicking the Submit button.
I created a dev version of the site to show this problem and not upload it to the live site. On the live site, I received the same error message, then rolled back to version 2.6.9 so that the form would work.

I also get the error “gform.initializeOnLoaded is not a function” on this page. Added to function.php “add_filter( ‘gform_force_hooks_js_output’, ‘__return_true’ );” but the error did not disappear.

Here is a link to the page:

Have you tried running through a conflict test?

Thank you! I will try now.

Errors occurred due to a conflict with the theme.
They have already been fixed.
Thank you!