Strip the Forwarded header since nothing is compatible with it yet

core/nginx/conf/proxy.conf

@@ -1,6 +1,7 @@
 # Default proxy setup
 proxy_set_header Host $http_host;
 proxy_set_header X-Real-IP $remote_addr;
+proxy_set_header Forwarded "";
 proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
 proxy_set_header X-Forwarded-Proto $proxy_x_forwarded_proto;
 proxy_http_version 1.1;