Update lib/classes/Seminar.class.php

lib/classes/Seminar.class.php

@@ -2037,7 +2037,7 @@ class Seminar
                 foreach ($termine as $termin_id) {
                     $statement->execute([$termin_id, $user_id]);
                 }
-                if (Deputy::isActivated()()) {
+                if (Deputy::isActivated()) {
                     $other_dozenten = array_diff(array_keys($dozenten), [$user_id]);
                     foreach (Deputy::findByRange_id($user_id) as $default_deputy) {
                         if ($default_deputy->user_id != $GLOBALS['user']->id &&