What other plugins and theme do you use on the site?
This is the current list of active plugins, all on the lastest versions, theme is custom developed:
ActiveCampaign Postmark
Advanced Custom Fields Multilingual
Advanced Custom Fields PRO
Contact Form 7
Contact Form 7 Extension For Mailchimp
Contact Form 7 Multilingual
Contact Form CFDB7
GDPR Cookie Compliance
Git UpdaterVersion
Safe SVG
Transients ManagerVersion
WPML Media Translation
WPML Multilingual CMS
WPML SEO
WPML String Translation
Yoast SEOVersion
Yoast SEO Premium
Anyways, i did a bit of testing, disabled all the plugins and got a same result on the same theme, when i switched the theme to default wp theme it seems like index.js is loaded correctly and validation is working, so it’s safe bet that some part of our custom code functionality causes this error, any idea which change from 5.9.8 to 6.0 would cause this error so i can troubleshoot our code further? This is currently the way we echo form in php:
<?php if (!is_admin() && isset($form) && $form) : ?>
<?= do_shortcode('[contact-form-7 id="' . $form->ID . '" title="' . $form->post_title . '"]'); ?>
<?php endif; ?>
The issue was in this piece of code defering wpcf7 js files on the load, so probably that was the reason wpcf7 was declared as undefined:
add_filter( ‘script_loader_tag’, function ($tag, $handle, $src) {
if(!is_admin()) {
$tag = ”.”\n”;
}
return $tag;
}, 10, 3 );