[backend] Mails : bug envoi de mails en double à certains utilisateurs

backend/models/MailForm.php

             $response = $mj->post(\Mailjet\Resources::$Email, ['body' => $body]);
         }
         
-        $response = $mj->post(\Mailjet\Resources::$Email, ['body' => $body]);
-        
         return $response->success() ;
     }