Fatal error: Uncaught Error

Hi,
For several days, the downloads that we had set up on our site no longer work.
When you receive the email ans you click on the link, here is the message that appears :

Fatal error: Uncaught Error: Call to undefined function wp_redirect() in /customers/d/a/e/blog-in-lyon.fr/httpd.www/wp-content/plugins/email-before-download/public/class-email-before-download-public.php:181 Stack trace: #0 /customers/d/a/e/blog-in-lyon.fr/httpd.www/wp-includes/class-wp-hook.php(305): Email_Before_Download_Public->ebd_the_download(‘WP Media folder’, Array) #1 /customers/d/a/e/blog-in-lyon.fr/httpd.www/wp-includes/plugin.php(189): WP_Hook->apply_filters(‘WP Media folder’, Array) #2 /customers/d/a/e/blog-in-lyon.fr/httpd.www/wp-includes/kses.php(941): apply_filters(‘pre_kses’, ‘WP Media folder’, Array, Array) #3 /customers/d/a/e/blog-in-lyon.fr/httpd.www/wp-includes/kses.php(759): wp_kses_hook(‘WP Media folder’, Array, Array) #4 /customers/d/a/e/blog-in-lyon.fr/httpd.www/wp-admin/includes/plugin.php(190): wp_kses(‘WP Media folder’, Array) #5 /customers/d/a/e/blog-in-lyon.fr/httpd.www/wp-admin/includes/plugin.php(109): _get_plugin_data_markup_translate(‘wp-media-folder…’, Array, true, true) #6 /customers/d/ in /customers/d/a/e/blog-in-lyon.fr/httpd.www/wp-content/plugins/email-before-download/public/class-email-before-download-public.php on line 181`

This is how it is integrated into the page

<div class="ebd-box">
  <div class="ebd-box-content">
    <span class="ebd-box-title">Complétez le formulaire pour télécharger votre fond d'écran</span><br>
    Un email contenant le lien de votre téléchargement vous sera envoyé<br>
    <br>
    [email-download download_id="8236" contact_form_id="8239"]
  </div>
</div>

Can you help me ?

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