I have a light in my scene which was originally a Stationary Light and it worked fine.
I wanted to change it to a static light to optimize performance, but after changing it and building the lights, the scene turned dark.
I have confirmed that the objects here are of a static type, but I am not sure what the problem is and I'm seeking assistance.
Did you enable Lumen? It's default for UE5 is on. Lumen will disable static lightning. See the documentation of Lumen: When Lumen is enabled for a project, precomputed static lighting contributions are disabled and all lightmaps are hidden. https://docs.unrealengine.com/5.0/en-US/lumen-global-illumination-and-reflections-in-unreal-engine/