我是使用 selenium 的 python flask 新手，我在 Heroku 上托管了 Flask API，该 API 会抓取我所在大学的网站以检索出勤数据并返回。该 API 已使用 Gunicorn WSGI 托管，并且运行正常。但是当同时有多个 API 调用时，它会给出一个错误，提示页面因选项卡崩溃而崩溃。

ERROR in app: Exception on /attend [POST]
Traceback (most recent call last):
File "/app/.heroku/python/lib/python3.9/site-packages/flask/app.py", line 2073, in wsgi_app
response = self.full_dispatch_request()
File "/app/.heroku/python/lib/python3.9/site-packages/flask/app.py", line 1518, in full_dispatch_request 
rv = self.handle_user_exception(e)
File "/app/.heroku/python/lib/python3.9/site-packages/flask/app.py", line 1516, in full_dispatch_request
rv = self.dispatch_request()
File "/app/.heroku/python/lib/python3.9/site-packages/flask/app.py", line 1502, in dispatch_request
return self.ensure_sync(self.view_functions[rule.endpoint])(**req.view_args)
File "/app/app/main.py", line 29, in attend
driver.get("https://academia.srmist.edu.in/#View:My_Attendance")
File "/app/.heroku/python/lib/python3.9/site-packages/selenium/webdriver/remote/webdriver.py", line 436, in get
self.execute(Command.GET, {'url': url})
File "/app/.heroku/python/lib/python3.9/site-packages/selenium/webdriver/remote/webdriver.py", line 424, in execute
self.error_handler.check_response(response)
File "/app/.heroku/python/lib/python3.9/site-packages/selenium/webdriver/remote/errorhandler.py", line 247, in check_response
raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.WebDriverException: Message: unknown error: session deleted because of page crash
from tab crashed
(Session info: headless chrome=97.0.4692.99)

第一个 API 调用崩溃，但第二个 API 调用成功并返回数据。

该函数的起始代码是：

app = Flask(__name__)
app.config['JSON_SORT_KEYS'] = False
import os

os.environ['DISPLAY'] = ':0'

@app.route('/attend',methods=["POST"])
def attend():
    options = webdriver.ChromeOptions()
    options.add_argument('--disable-dev-shm-usage')
    driver = webdriver.Chrome(ChromeDriverManager().install())
    input_json = request.get_json(force=True)
    id = input_json["id"]
    password = input_json["pass"]
    driver.get("https://academia.srmist.edu.in/#View:My_Attendance")
...

我尝试添加 chrome 选项，如“–disable-dev-shm-usage”和“–no-flags”，但这似乎对标签崩溃没有任何影响。我希望 API 能够进行多次调用，并向所有调用发送数据，即使它们同时被调用。我还想使用 selenium 网格，但我不确定它是否会起作用。

我用于 Heroku 应用程序的构建包是：

https://github.com/heroku/heroku-buildpack-chromedriver
https://github.com/heroku/heroku-buildpack-google-chrome