I am using the contact 7 plugin for the contact forms in my virtual store, it works well on the entire page, only the subscription popup does not work, an error message appears, I attach a screenshot
https://navonella.com/wp-content/uploads/2022/08/Captura3322.jpg
error that appears when the form is submitted
https://navonella.com/wp-admin/upload.php?item=19357
Please help me how can I solve this problem.