问Nginx显示400次不良请求没有发送所需的SSL证书

EN

server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    ssl_certificate         /etc/ssl/cert.pem;
    ssl_certificate_key     /etc/ssl/key.pem;

    ssl_client_certificate /etc/ssl/cloudflare.crt;
    ssl_verify_client on;

    server_name example.com www.example.com;

    location = /favicon.ico { access_log off; log_not_found off; }
    location /static/ {
        root /home/username/www/exampleproject;
    }
    location /media/ {
        root /home/username/www/exampleproject;
    }

    location / {
        include proxy_params;
        proxy_pass http://unix:/home/username/www/exampleproject/exampleproject.sock;
    }
}