Restructure libraries.

assets/geojson.php

@@ -3,9 +3,9 @@
 use Netzmacht\Contao\Leaflet\Controller\GeoJsonController;
 
 define('TL_MODE', 'FE');
-require(dirname(dirname(dirname(dirname($_SERVER['SCRIPT_FILENAME'])))) . '/initialize.php');
+require(dirname(dirname(dirname($_SERVER['SCRIPT_FILENAME']))) . '/system/initialize.php');
 
 $container  = $GLOBALS['container'];
 $controller = new GeoJsonController($container['leaflet.map.service'], $container['input']);
 
-echo $controller->execute();
+$controller->execute();