Removed sensio/framework-extra-bundle as it was abandoned and is not needed anymore

config/routes/attributes.yaml

@@ -0,0 +1,16 @@
+controllers:
+    resource:
+        path: ../../src/Controller/
+        namespace: App\Controller
+    type: attribute
+    prefix: '{_locale}'
+
+    defaults:
+        _locale: '%kernel.default_locale%'
+    requirements:
+        # Match only locales like de_DE or de
+        _locale: "^[a-z]{2}(_[A-Z]{2})?$"
+
+kernel:
+    resource: ../../src/Kernel.php
+    type: attribute