This issue is related to Bug 1534145. SSL.com: P-384 curve / ecdsa-with-SHA256 certificates.
A representative from Apple estimated 558,000 certificates to become invalidated: Bug 1533655. DigiCert: Apple: Non-compliant Serial Numbers
GoDaddy, Google, Apple and Facebook (that would explain why Facebook was glitchy today) are affected.
They are working on resolving the issue right now.
That would explain our problems, folks!
Update: The issue has been resolved. Try to refresh your projects.
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