Problem about TLS cert

1

My http3 server code using rust that need TLS cert to run.
But render not provide TLS cert.
How can I solve such problem.

My code:

use salvo::conn::rustls::{Keycert, RustlsConfig};
use salvo::prelude::*;

#[handler]
async fn hello() -> &'static str {
    "Hello World"
}

#[tokio::main]
async fn main() {
    tracing_subscriber::fmt().init();


                                       // Here which need TLS cert !!!

    let cert = include_bytes!("../certs/cert.pem").to_vec();
    let key = include_bytes!("../certs/key.pem").to_vec();

    let router = Router::new().get(hello);

    let config = RustlsConfig::new(Keycert::new().cert(cert.as_slice()).key(key.as_slice()));

    let listener = TcpListener::new(("0.0.0.0", 5800)).rustls(config.clone());

    let acceptor = QuinnListener::new(config.build_quinn_config().unwrap(), ("0.0.0.0", 5800))
        .join(listener)
        .bind()
        .await;

    Server::new(acceptor).serve(router).await;
}