HTTP error 408 tells you that request is timing out and by default time out configuration is 6 seconds. If any website didn't responds in 6 seconds then either their server is too slow or may be your network as well.
[Error] HTTP ERROR :: 408 : Request Timeout
To resolve this, you can increase the timeout of any scraping agent by following the steps below.
- Edit the agent
- Go to Advance Setting
- Click on Headers tab
- Go to Connections section and change the timeout to something more then 6 seconds(screenshot below)