Do not load the matomo script if the is no URL specified

application/views/components/matomo_analytics_script.php

@@ -4,6 +4,8 @@
  */
 ?>
 
+<?php if ( ! empty($matomo_analytics_url)): ?>
+
     <script>
         var _paq = window._paq = window._paq || [];
         /* tracker methods like "setCustomDimension" should be called before "trackPageView" */
@@ -20,5 +22,8 @@
             s.parentNode.insertBefore(g, s);
         })();
     </script>
+
     <noscript><p><img src="<?= $matomo_analytics_url ?>matomo.php?idsite=1&amp;rec=1" style="border:0;" alt=""/></p>
     </noscript>
+
+<?php endif ?>