Struggling with Stack Tracing in Effect Program

import { Effect, Either, pipe } from "effect";

const someUtilityFunction = () => Either.left(new Error("utility failed"));

const someUtilityEffect = () =>
  pipe(Effect.succeed({}), Effect.flatMap(someUtilityFunction));

const doA = Effect.withSpan("doA")(
  Effect.promise(async () => console.log("did some async A"))
);

const program = Effect.withSpan("program")(
  pipe(
    doA,
    // Pick one or the other
    Effect.flatMap(() => Effect.withSpan("wrapFunction")(someUtilityFunction())),
    // Effect.flatMap(() => Effect.withSpan("wrapEffect")(someUtilityEffect()))
  )
);

void Effect.runPromise(program);