According to SpaceFlightNow
> “SCRUB. NASA launch director Charlie Blackwell-Thompson has called off today's Artemis 1 launch attempt due to an issue with an engine bleed on the core stage.” https://spaceflightnow.com/2022/08/29/artemis-1-launch-live-...
Given the other issues (crack in the interstage section, comm link issue) mentioned in the live thread, I wonder how many engineers are secretly relieved the launch was scrubbed this morning.