That said, services like LinkedIn protect their data against bots. If your server is blacklisted they won't serve it anymore which causes the HTTP Request Failed. The same might happen if communication takes too long (slow connection).
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https://www.linkedin.com is giving me the same issue. I am looking into what server permission prevents the request.
Were you able to find a solution for this?
I get positive results with this test script
That said, services like LinkedIn protect their data against bots. If your server is blacklisted they won't serve it anymore which causes the HTTP Request Failed. The same might happen if communication takes too long (slow connection).