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[BUG] Cannot find module 'puppeteer-core/lib/Browser'

See original GitHub issue

Trying to execute README example, the following error occurred.

Environment

chrome-aws-lambda Version: 3.1.1
puppeteer / puppeteer-core Version: 5.1.0
OS: Linux
Node.js Version: 12.x
Lambda / GCF Runtime: nodejs12.x

Expected Behavior

Should have returned example.com content.

Current Behavior

Following error occurs:

Lambda execution failed with status 200 due to customer function error:  Cannot find module 'puppeteer-core/lib/Browser'
Require stack:
- /var/task/node_modules/chrome-aws-lambda/source/puppeteer/lib/Browser.js
- /var/task/node_modules/chrome-aws-lambda/source/index.js
- /var/task/app.js

No Browser module expored in the following path: ‘puppeteer-core/lib/Browser’

Steps to Reproduce

Lambda functions: memory is 1024M, timeout is 3000ms.

const chromium = require('chrome-aws-lambda');

exports.handler = async (event, context, callback) => {
  let result = null;
  let browser = null;

  try {
    browser = await chromium.puppeteer.launch({
      args: chromium.args,
      defaultViewport: chromium.defaultViewport,
      executablePath: await chromium.executablePath,
      headless: chromium.headless,
      ignoreHTTPSErrors: true,
    });

    let page = await browser.newPage();

    await page.goto(event.url || 'https://example.com');

    result = await page.title();
  } catch (error) {
    return callback(error);
  } finally {
    if (browser !== null) {
      await browser.close();
    }
  }

  return callback(null, result);
};