Pyppeteer浏览器在heroku中意外关闭

Question

我最近在heroku部署了一个应用程序。它使用python Pypetteer包。在测试repl.it时，我没有遇到任何问题。但不幸的是，在heroku中，浏览器不断崩溃

我使用requirement.txt安装pyppeteer包。 我还尝试使用apt heroku buildpack来安装Pupeter按照here工作所需的需求

我的节目：

async def mainer(link, path, is_image):
    browser = await launch(args=['--no-sandbox'])
    page = await browser.newPage()
    await page.goto(link)
    if is_image:
        await page.screenshot({'path': f'{path}', 'fullPage': True, 'type': 'png'})
    else:
        await page.pdf({'path': f'{path}'})
    await browser.close()

以下是heroku的完整回溯错误：

2020-05-14T19:39:50.115643+00:00 app[worker.1]:     await handler.callback(self.client, *args)
2020-05-14T19:39:50.115644+00:00 app[worker.1]:   File "/app/plugins/downloader.py", line 61, in cb_
2020-05-14T19:39:50.115645+00:00 app[worker.1]:     await mainer(url,file,mode)
2020-05-14T19:39:50.115645+00:00 app[worker.1]:   File "/app/plugins/downloader.py", line 13, in mainer
2020-05-14T19:39:50.115646+00:00 app[worker.1]:     browser = await launch(args=['--no-sandbox'])
2020-05-14T19:39:50.115646+00:00 app[worker.1]:   File "/app/.heroku/python/lib/python3.7/site-packages/pyppeteer/launcher.py", line 305, in launch
2020-05-14T19:39:50.115647+00:00 app[worker.1]:     return await Launcher(options, **kwargs).launch()
2020-05-14T19:39:50.115648+00:00 app[worker.1]:   File "/app/.heroku/python/lib/python3.7/site-packages/pyppeteer/launcher.py", line 166, in launch
2020-05-14T19:39:50.115648+00:00 app[worker.1]:     self.browserWSEndpoint = get_ws_endpoint(self.url)
2020-05-14T19:39:50.115648+00:00 app[worker.1]:   File "/app/.heroku/python/lib/python3.7/site-packages/pyppeteer/launcher.py", line 225, in get_ws_endpoint
2020-05-14T19:39:50.115649+00:00 app[worker.1]:     raise BrowserError('Browser closed unexpectedly:\n')
2020-05-14T19:39:50.115649+00:00 app[worker.1]: pyppeteer.errors.BrowserError: Browser closed unexpectedly:
2020-05-14T19:39:50.115650+00:00 app[worker.1]: 

Answer 1

如果我们关心使用Heroku提供的buildpack，那么将有一个名为^{}的环境变量。我们可以使用这个变量作为^{}或webdriver.Chrome()的参数