All, this should not affect many people, as labs.snort.org was quite a dated site, however, for public notice, labs.snort.org has been decommissioned today.
All of the content was moved to the new Snort.org years ago, and the IP Blacklist was moved to TalosIntelligence.com about two years ago.
If you are receiving errors in your pulledpork instance, as a result of not being able to pull down the IP Blacklist anymore, either update your pulledpork instance (recommended), or change out the IP Blacklisting URL to the one listed here:
https://github.com/shirkdog/pulledpork/commit/5689d1be4605258f4d1367e19830a562960e3820#diff-d4abb18c40b045757f3743d4cdfcf102
Thanks!