Traceback (most recent call last):
  File "howToStudy-env3.7/webhook.py", line 64, in <module>
    app = get_new_configured_app(dispatcher=dp, path=WEBHOOK_URL)
  File "/root/howToStudy-env3.7/lib/python3.7/site-packages/aiogram/dispatcher/webhook.py", line 306, in get_new_configured_app
    configure_app(dispatcher, app, path)
  File "/root/howToStudy-env3.7/lib/python3.7/site-packages/aiogram/dispatcher/webhook.py", line 293, in configure_app
    app.router.add_route('*', path, WebhookRequestHandler, name=route_name)
  File "/root/howToStudy-env3.7/lib/python3.7/site-packages/aiohttp/web_urldispatcher.py", line 1034, in add_route
    resource = self.add_resource(path, name=name)
  File "/root/howToStudy-env3.7/lib/python3.7/site-packages/aiohttp/web_urldispatcher.py", line 1014, in add_resource
    raise ValueError("path should be started with / or be empty")
ValueError: path should be started with / or be empty
Exception ignored in: <function BaseBot.__del__ at 0x7f394bc37400>
Traceback (most recent call last):
  File "/root/howToStudy-env3.7/lib/python3.7/site-packages/aiogram/bot/base.py", line 109, in __del__
  File "/usr/local/lib/python3.7/asyncio/events.py", line 762, in new_event_loop
  File "/usr/local/lib/python3.7/asyncio/events.py", line 660, in new_event_loop
  File "/usr/local/lib/python3.7/asyncio/unix_events.py", line 51, in __init__
  File "/usr/local/lib/python3.7/asyncio/selector_events.py", line 49, in __init__
  File "/usr/local/lib/python3.7/asyncio/base_events.py", line 373, in __init__
  File "/usr/local/lib/python3.7/asyncio/coroutines.py", line 28, in _is_debug_mode
AttributeError: 'NoneType' object has no attribute 'dev_mode'
Exception ignored in: <function BaseEventLoop.__del__ at 0x7f394f4a12f0>
Traceback (most recent call last):
  File "/usr/local/lib/python3.7/asyncio/base_events.py", line 622, in __del__
  File "/usr/local/lib/python3.7/asyncio/base_events.py", line 390, in __repr__
  File "/usr/local/lib/python3.7/asyncio/base_events.py", line 1794, in get_debug
AttributeError: '_UnixSelectorEventLoop' object has no attribute '_debug'
ERROR:asyncio:Unclosed client session
client_session: <aiohttp.client.ClientSession object at 0x7f394bac6860>