Webgui upload fail 404 not found

Hello I’m newbie
I have some problem, my seafile server can’t upload via webgui

My web server proxy is nginx

error is HTTP/2.0 404

I think error is wrong url
I check seahub.log and I find log like this

 2018-08-12 13:34:30,870 [WARNING] django.request:152 get_response Not Found:
/cloud.com/seafhttp/upload-aj/93189353-399a-4aea-b9b9-36b8086b0512

and I check Crome debug mod

https://serverurl/serverurl/seafhttp/upload-aj/20d45a5c-b44f-41be-
a954-a61b98e084f9 404 ()

I think Django url have something wrong.

how can I solve this problem?

ccnet.conf ----------------
[General]
USER_NAME = cloud
ID = **********
NAME = cloud
SERVICE_URL = "https://serverurl"

[Client]
PORT = 13419

seahub_settings.py-----------------
SECRET_KEY = "**********"
HTTP_SERVER_ROOT = "https://serverurl/seafhttp"


nginx conf file ----------------------------
server {
listen       80;
server_name cloud.com ;
return       301$server_name$request_uri;
}

server {
    listen       443 ssl http2;
    server_name cloud.com ;


client_max_body_size 4000M;
ssl_certificate "/etc/letsencrypt/live/cloud.com/fullchain.pem";
ssl_certificate_key "/etc/letsencrypt/live/cloud.com/privkey.pem";
ssl_dhparam "/etc/ssl/certs/dhparam.pem";

add_header Strict-Transport-Security "max-age=31536000";
access_log /var/log/nginx/cloud.access.log ;
error_log  /var/log/nginx/cloud.error.log ;

location / {
    proxy_set_header   X-Real-IP        $remote_addr;
    proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;
    #proxy_set_header   Host             $host;
    proxy_set_header Host $host:$server_port;
    proxy_pass http://127.0.0.1:8000;

}
location /seafhttp {
rewrite ^/seafhttp(.*)$ $1 break;
    proxy_pass http://127.0.0.1:8082;
    client_max_body_size 0;
}
location /media {
    root ****/seafile-server-6.3.2/seahub;
}
    



}