Fix path for Config.php inclusion check

Author: DawoudIO

src/index.php

@@ -29,7 +29,7 @@
 
 header('CRM: would redirect');
 
-if (file_exists(__DIR__ . 'Include/Config.php')) {
+if (file_exists('Include/Config.php')) {
     require_once __DIR__ . '/Include/Config.php';
 } else {
     header('Location: setup');