axios HTTPS proxy not working: httpsAgent, proxy: false and the 407

import axios from "axios";
import { HttpsProxyAgent } from "https-proxy-agent";

const USER = process.env.PROXY_USER;
const PASS = process.env.PROXY_PASS;

// One agent = one kept connection = one IP. Make a new agent for a new IP.
function proxied(targeting = "") {
  const login = `${encodeURIComponent(USER + targeting)}:${encodeURIComponent(PASS)}`;
  return axios.create({
    httpsAgent: new HttpsProxyAgent(`http://${login}@via.proxies.vision:9000`), // httpsAgent, not httpAgent
    proxy: false, // ignore HTTPS_PROXY and axios's own proxy option
    timeout: 30000,
  });
}

// Residential exits sometimes drop a connection (ECONNRESET): retry on a new one.
// A status from the proxy (407, 403, 465) won't change on a retry.
async function get(url, targeting = "", attempts = 3) {
  for (let i = 1; ; i++) {
    try {
      return await proxied(targeting).get(url);
    } catch (err) {
      if (err.response || i === attempts) throw err;
    }
  }
}

for (let i = 0; i < 3; i++) {
  const { data } = await get("https://ipinfo.io/json", "-country-de");
  console.log(data.ip, data.country, data.org);
}