Redirect to listing if student wants to start a video but there is no running meeting - refs #5802 BT#5272

plugin/bbb/start.php

@@ -36,6 +36,10 @@ if ($bbb->plugin_enabled) {
                     $url = $bbb->create_meeting($meeting_params);
                     header('location: '.$url);
                     exit;
+                } else {
+                    $url = 'listing.php';
+                    header('location: '.$url);
+                    exit;
                 }
             }
         } else {
@@ -50,4 +54,4 @@ if ($bbb->plugin_enabled) {
     $message = Display::return_message(get_lang('ServerIsNotConfigured'), 'warning');
 }
 $tpl->assign('message', $message);
-$tpl->display_one_col_template();
+$tpl->display_one_col_template();