database update

Backend/Controllers/Group/Logout.php

@@ -1,9 +1,10 @@
 <?php
 
 session_start();
-
+session_unset();
 session_destroy();
 
+
 $cookieCon = array(
     'expires' => -1,
     'samesite' => 'Strict',
@@ -11,5 +12,6 @@ $cookieCon = array(
 );
 setcookie("groupName", null, $cookieCon);
 setcookie("groupId", null, $cookieCon);
+setcookie("userName", null, $cookieCon);
 
 echo http_response_code(200);