I believe I saw it on CNN. There were pics of a 2 x 4 wedged against an electric panel so the breaker wouldn't pop. I couldn't find that story, but I did find this:
https://www.marineinsight.com/shipping-news/loose-electrical-cable-on-mv-dali-ship-led-to-the-collapse-of-baltimore-bridge/
A preliminary assessment had already identified these issues, but new reports reveal additional details on the ship’s electrical system failures that led up to the accident.
The ship’s power outage occurred while it was docked in Baltimore. It was caused by a crew member’s error during maintenance that led to an engine stall.
The ship’s crew then changed its electrical configuration, switching to a different transformer and breaker system just before departure. The new reports show that investigators found the problematic loose cable in this secondary system.
Further investigation found that the loose wire could cause an open circuit and a breaker to trip, leading to a blackout. Engineers from Hyundai, the ship’s electrical system manufacturer, confirmed that removing the wire in simulations resulted in a complete power outage on the Dali.