NGINX Rewrite在末尾添加了％2C

Question

当我尝试通过www.test1.domain.de连接到我的Nginx代理时，我得到了尾随的％2C https://test1.domain.de%2C 。如果我连接到http：//或https：//，一切正常。尾巴从哪里来？

events {

}

http{

    server {
        listen 80;

        server_name 

        return 301 https://$server_name$request_uri;
    }

    server {
        listen 80;
        server_name test1.domain.de;

        location /.well-known/acme-challenge/ {
            root /var/www/certbot;
        }

        return 301 https://$host$request_uri;
    }

    server {
        listen 443 ssl;

        server_name test1.domain.de;

        location / {
            proxy_pass http://webserver1:80;
            rewrite ^/webserver1(.*)$ $1 break;
        }

        include /etc/letsencrypt/options-ssl-nginx.conf;
        ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;

        ssl_certificate /etc/letsencrypt/live/test1.domain.de/fullchain.pem;
        ssl_certificate_key /etc/letsencrypt/live/test1.domain.de/privkey.pem;
    }
}