Keep on getting the error "Error: Method Not Allowed", after certain number of translations

[chronos2403]

import express from 'express';
import fetchChapter from './fetchChapter.js';

import { translate } from '@vitalets/google-translate-api';
import { HttpProxyAgent } from 'http-proxy-agent';

const app = express();
const port = 3000;

// Proxy list for IP rotation
const proxyList = [
    { protocol: 'http', host: '162.248.225.116', port: 80 },
    { protocol: 'http', host: '162.248.225.32', port: 80 },
    { protocol: 'http', host: '207.2.120.58', port: 80 },
    { protocol: 'http', host: '162.248.225.224', port: 80 },
    { protocol: 'http', host: '162.248.225.13', port: 80 },
    { protocol: 'http', host: '162.248.224.103', port: 80 },
    { protocol: 'http', host: '66.225.254.16', port: 80 },
    { protocol: 'http', host: '162.248.225.101', port: 80 },
    { protocol: 'http', host: '162.248.225.106', port: 80 },
    { protocol: 'http', host: '212.107.31.118', port: 80 },
    { protocol: 'http', host: '162.248.225.118', port: 80 }
  ];
let currentProxyIndex = -1; 


const getNextProxy = () => {
  currentProxyIndex = (currentProxyIndex + 1) % proxyList.length;
  return proxyList[currentProxyIndex];
};

app.get('/', async (req, res) => {
  const chapters = [];
  let currentUrl = 'https://www.xxbiqudu.com/52_52835/139293077.html';//sample site for raw chinese novel
  const jspath_txt = "#content";
  const jspath_btn = "#wrapper > div.content_read > div > div.bookname > div.bottem1 > a:nth-child(5)" || "#wrapper > div.content_read > div > div.bookname > div.bottem1 > a:nth-child(6)";

  const fetchAndTranslate = async (url, chapterCount) => {
    const chapterText = await fetchChapter(url, jspath_txt, jspath_btn);
    const originalContent = chapterText.currentContent;

    try {
      // Rotate proxies every 20 chapters
      if (chapterCount % 20 === 0) {
        const proxy = getNextProxy();
        const agent = new HttpProxyAgent(`${proxy.protocol}://${proxy.host}:${proxy.port}`);
        console.log(`Switching to proxy: ${proxy.host}:${proxy.port}`);
        const translatedContent = await translate(originalContent, { to: 'en', fetchOptions: { agent } });
     
        chapters.push(translatedContent.text);
      } else {
        const translatedContent = await translate(originalContent, { to: 'en' });
   
        chapters.push(translatedContent.text);
      }

      if (chapterText.nextUrl) {
        await fetchAndTranslate(chapterText.nextUrl, chapterCount + 1);
      }
    } catch (error) {
      console.error(`Error occurred. Switching to the next proxy. Error: ${error.message}`);
   
      const proxy = getNextProxy();
      console.log(`Switching to proxy: ${proxy.host}:${proxy.port}`);
      await fetchAndTranslate(url, chapterCount); 
    }
  };

  await fetchAndTranslate(currentUrl, 1);

  res.send(chapters);
});

app.listen(port, () => {
  console.log(`Server is running on http://localhost:${port}`);
});

I wrote this code trying to scrape raw chinese light novel chapters and translate them to english, but whenever i run this code, i keep on the getting errors like:
"Switching to proxy: 162.248.225.106:80
Error occurred. Switching to the next proxy. Error: Method Not Allowed"

[vitalets]

1. In the catch clause it's better to check that it's TooManyRequestsError and change proxy only in that case. See example in readme https://github.com/vitalets/google-translate-api?tab=readme-ov-file#limits. Method Not Allowed error is not related to proxy
2. What is the size of originalContent? Could you try to truncate it to smaller size and re-check?