PROD3: UI not loading

This incident affected: Prod 3 (Continuous Delivery (CD) - FirstGen - EOS, Continuous Delivery - Next Generation (CDNG), Cloud Cost Management (CCM), Continuous Error Tracking (CET), Continuous Integration Enterprise(CIE) - Self Hosted Runners, Continuous Integration Enterprise(CIE) - Mac Cloud Builds, Continuous Integration Enterprise(CIE) - Windows Cloud Builds, Continuous Integration Enterprise(CIE) - Linux Cloud Builds, Custom Dashboards, Feature Flags (FF), Security Testing Orchestration (STO), Service Reliability Management (SRM), Chaos Engineering, Internal Developer Portal (IDP), Infrastructure as Code Management (IaCM), Software Supply Chain Assurance (SSCA), Software Engineering Insights (SEI), Code Repository).