diff --git a/src/StyleManager/Config.php b/src/StyleManager/Config.php
index 2b16d9b..d525542 100644
--- a/src/StyleManager/Config.php
+++ b/src/StyleManager/Config.php
@@ -118,14 +118,14 @@ public static function getBundleConfigurationFiles(): ?array
     /**
      * Load configuration files from third-party bundles and return them as array
      */
-    protected function loadBundleConfiguration(): ?array
+    protected function loadBundleConfiguration(): array
     {
         if($arrFiles = $this->getBundleConfigurationFiles())
         {
             return ImportController::importFiles($arrFiles, false);
         }
 
-        return null;
+        return [[],[]];
     }
 
     /**