Error when submitting ContactForm, submitting with admin-ajax [closed]

I am no programmer and cannot find any solution on the web, except with good or indepth knowledge. Hope someone can point me in the right direction with this: When submitting a from (in popup) i get this “error” and the form keeps the loading wheel, but nothing happens: admin-ajax.php?action=adifier_get_unread_message_num (these are the query string…

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