When FILE_SERVER_ROOT is set to SERVICE_URL/seafhttp, does there have to be a special rewrite in nginx?

I am running an nginx reverse proxy and have set up my seafile URLs like so:

Everything works fine except that the android client cannot upload (downloading is fine).

Does there have to be some sort of rewrite in nginx to handle the /seafhttp?

Is there a way to see some sort of logs related to the failed uploads to debug?

Is there anything else to look into for why only uploads fail on android?

Thanks!

Did you try settings, described in docs?
manual.seafile.com/deploy/deploy_with_nginx/