Task exception was never retrieved

[Bruledamien]

I randomly (but quite frequently) get this error when I try to crawl several pages of a website :
Task exception was never retrieved future: <Task finished coro=<CDPSession.send() done, defined at /Users/user/.virtualenvs/project/lib/python3.6/site-packages/pyppeteer/connection.py:180> exception=NetworkError('Protocol Error: Unknown event id: 25 None',)>

Traceback (most recent call last): File "/Users/user/.virtualenvs/project/lib/python3.6/site-packages/pyppeteer/connection.py", line 200, in send return await callback
An idea where this error could come from ?

Also, this does not seem to affect the scenario but it looks like tasks are not handled the way asyncio expects in the connection class.

[zdrouse]

Just curious, are you using Python 3.6.5?

[Bruledamien]

I am using Python 3.6.3, I will try upgrading.

[mjcaley]

I got this on both 3.6.3 and 3.6.5, but only when I was using the ignoreHTTPSErrors option. Was that the case for you too @Bruledamien?

I think it might have something to do with the Security.handleCertificateError, which also looks to be deprecated now. Maybe there's another option that can be used.