Suppress SSLWantReadError exceptions.
Suppress SSLWantReadError exceptions.

pengzhangdev/slackbot,lins05/slackbot,kave/zenhub-slackbot,TimZehta/slackbot,kave/zenhub-slackbot,grantvix/images,TimZehta/slackbot,pengzhangdev/slackbot,lins05/slackbot