added a .htaccess redirect instead of doing it in the script. site seems to work again now

inside/.htaccess

@@ -0,0 +1,3 @@
+RewriteEngine On
+RewriteCond %{SERVER_PORT} 80
+RewriteRule ^(.*)$ https://www.studentersamfundet.no/inside/$1 [R,L]

inside/index.php

@@ -1,10 +1,10 @@
 <?php
 
-if(!isset($_SERVER['HTTPS']) || $_SERVER['HTTPS'] != 'on')
-{
-        header("Location: https://www.studentersamfundet.no{$_SERVER['REQUEST_URI']}");
-        die;
-}
+#if(!isset($_SERVER['HTTPS']) || $_SERVER['HTTPS'] != 'on')
+#{
+#        header("Location: https://www.studentersamfundet.no{$_SERVER['REQUEST_URI']}");
+#        die;
+#}
 
 $time_start = microtime(true);