Mixed Content: The page at 'https://xwiki... When try to edit page

I have error “Failed to load the page” when I try to edit my own page and in F12 I can see:

Mixed Content: The page at 'https://xwiki.1c.com.vn/bin/view/Main/#edit' was loaded over HTTPS, but requested an insecure XMLHttpRequest endpoint 'http://xwiki.1c.com.vn/bin/lock/Main/WebHome?ajax=1&action=edit&language=en'. This request has been blocked; the content must be served over HTTPS.

When I try to edit any page.

My infra:
NGINX server with config on host1:

server {

    listen 80;
    server_name xwiki.1c.com.vn;

    rewrite ^ https://$server_name$request_uri? permanent;

}
server {
listen 443 ssl;
server_name xwiki.1c.com.vn;

client_max_body_size 0;

index index.php index.html index.htm;

proxy_intercept_errors on;

#ssl on;
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
ssl_ciphers RC4:HIGH:!aNULL:!MD5:!kEDH;
ssl_prefer_server_ciphers on;
    ssl_certificate /etc/letsencrypt/live/xwiki.1c.com.vn/fullchain.pem; # managed by Certbot
    ssl_certificate_key /etc/letsencrypt/live/xwiki.1c.com.vn/privkey.pem; # managed by Certbot
ssl_session_cache shared:SSL:10m;
ssl_session_timeout 10m;



location / {

    proxy_set_header Host $http_host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forward-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_set_header X-Scheme $scheme;
    proxy_redirect off;
    if (!-f $request_filename) {
        proxy_pass http://containers.local:8080;
        break;
    }
}
}

docker container on host2:
docker-composer.yml

version: '3'

services:
  xwiki:
    image: xwiki:stable-postgres-tomcat
    environment:
      DB_HOST: dbms.local
      DB_DATABASE: xwiki
      DB_USER: xwiki
      DB_PASSWORD: xwiki
      TZ: 'Asia/Ho_Chi_Minh'
    restart: unless-stopped
    network_mode: "host"
    extra_hosts:
      - "dbms.local:10.8.1.102"
      - "host.docker.internal:host-gateway"

and setting inside xwiki:

SECURE (SSL): yes, PORT: 443