It looks like the cert for answers.ros.org has expired:
NET::ERR_CERT_DATE_INVALID
Subject: answers.ros.org
Issuer: Let’s Encrypt Authority X3
Expires on: Nov 4, 2017
Current date: Nov 4, 2017
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It looks like the cert for answers.ros.org has expired:
NET::ERR_CERT_DATE_INVALID
Subject: answers.ros.org
Issuer: Let’s Encrypt Authority X3
Expires on: Nov 4, 2017
Current date: Nov 4, 2017
Thanks for pointing it out. For updates please see: https://status.ros.org/incidents/38hjpp9wkhqx
If anyone is using chrome and this comes up, simply typing ‘badidea’ on the page can bypass the invalid certification check (NOT recommended for sites you don’t trust, or sometimes even on sites you trust. There may be an actual attacker compromising your network.)