fixed weird redirect under nginx proxy_pass over apache2

lib/php/login.php

@@ -74,7 +74,7 @@
         <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js" integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo=" crossorigin="anonymous"></script>
         <script src="<?=$GLOBALS['config']['installation_path']?>/lib/js/sha512.min.js"></script>
         <script src="<?=$GLOBALS['config']['installation_path']?>/lib/js/login.js"></script>
-        <script>var script_name = "<?=$GLOBALS['config']['installation_path']?>";</script>
+        <script>var script_name = "<?=$GLOBALS['config']['installation_path']?>/dashboard";</script>
     </body>
 </html>
 <?php