Theme contact form wont sent, CF7 only sends with no validaiton

Hi,

The default contact form on my client’s site had randomly stopped working, on submit the contact form would go away but no success message would appear.

We currently use SendGrid on the site to send emails, and tests from SendGrid dashboard work, so I know the site can send messages.
I installed CF7 for testing purposes and that wouldn’t send either, the sending wheel would continue to spin. It wouldn’t show an error but I found this in the logs.

10:31:56 write(1, “{\”into\”:\”#\”,\”status\”:\”validation_failed\”,\”message\”:\”One or more fields have an error. Please check and try again.\”,\”invalidFields\”:[{\”into\”:\”span.wpcf7-form-control-wrap.your-name\”,\”message\”:\”The field is required.\”,\”idref\”:null},{\”into\”:\”span.wpcf7-form-control-wrap.your-email\”,\”message\”:\”The field is required.\”,\”idref\”:null}]}”, 330) = 330

It’s a validation error even though each time its sent all of the validation rules are met. If I remove the validation rules for CF7 the message sends and comes through to my email just fine, although the same doesn’t work for the default theme contact form.

I copied the site over to a dev account with Duplicator to test the plugins and theme but discovered the form works on there just fine!