Error configuring https reverse proxy

Intranet access https://172.18.0.69:443 。 Use nginx reverse proxy https, proxy_ pass https://172.18.0.69:443 , SSL certificate is used, configuration is normal, but access error occurs

upstream jitsiTest {
server 172.18.0.69:443;
}

server {
listen 80;
server_name jitsitest.cn;

return 301 https://$host$request_uri;

}

server {
listen 443 ssl;
server_name jitsitest.cn;
client_max_body_size 100M;
charset UTF-8;
client_header_buffer_size 10k;
large_client_header_buffers 4 16k;

ssl_certificate /app/ssl/jitsitest.cn.pem;
ssl_certificate_key /app/ssl/jitsitest.cn.key;

    location / {
            proxy_pass https://jitsiTest;
    }

error_page   500 502 503 504  /50x.html;
location = /50x.html {
    root   /usr/share/nginx/html;
}

}

Certificate checks will always fail when you use an IP address instead of a domain.