Set url append

config/packages/fos_js_routing.yaml

@@ -1,2 +1,4 @@
 fos_js_routing:
+    request_context_base_url: '%url_append%'
     routes_to_expose: [home]
+

config/services.yaml

@@ -35,3 +35,4 @@ parameters:
     sonata_media.cdn.host: /public/uploads/media
     sonata_page.varnish.command: 'if [ ! -r "/etc/varnish/secret" ]; then echo "VALID ERROR :/"; else varnishadm -S /etc/varnish/secret -T 127.0.0.1:6082 {{ COMMAND }} "{{ EXPRESSION }}"; fi;'
     router.request_context.base_url: '%url_append%'
+    asset.request_context.base_path: '%router.request_context.base_url%'