Unknown connection error when downloading from wayback

[thusithaC]

Hi,

First of all thank for open sourcing this great tool.
I have been trying to learn the syntax and start playing around with archives using the "Downloading_WARC_from_Wayback" notebook using the Docker image in host network mode.

I observe some weird error messages in the process, and hope you could shed some light as to what might be happening.

[Stage 18:===============================================>     (449 + 16) / 500]java.net.ConnectException: Connection refused (Connection refused)
	at java.net.PlainSocketImpl.socketConnect(Native Method)
	at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
	at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
	at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
	at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
	at java.net.Socket.connect(Socket.java:589)
	at java.net.Socket.connect(Socket.java:538)
	at sun.net.NetworkClient.doConnect(NetworkClient.java:180)
	at sun.net.www.http.HttpClient.openServer(HttpClient.java:463)
	at sun.net.www.http.HttpClient.openServer(HttpClient.java:558)```

However, the download seems to be progressing, even though it is very slow and time consuming. (Not that I have limited the download to 500 pages). 
Is this error due to a environment setup issue? Can this be ignored?

Thanks,
TNC