Nginx conf for multiple Streamlit Apps

worker_processes  1;

events {
    worker_connections 1024;
}

http {
    map $http_upgrade $connection_upgrade {
        default upgrade;
        '' close;
    }

    server {
        listen 5000;
        server_name localhost;

        location /my_prefix {
            rewrite /my_prefix/(.*) /$1  break;
            proxy_pass http://localhost:8501;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection $connection_upgrade;
        }
        location /my_prefix2 {
            rewrite /my_prefix2/(.*) /$1  break;
            proxy_pass http://localhost:8502;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection $connection_upgrade;
        }
    }
}

Hi, i always get the feedback, that the http direct is not allowed here?