System.InvalidOperationException: 'UnwrapIfPromise' called before Promise was settled

[scgm0]

Engine engine = new();
engine.SetValue("setTimeout", (Action action, int delay) => {
    Task.Delay(delay).ContinueWith(_ => action());
});

var result = engine.Evaluate(@"
const waitFor = delay => new Promise(resolve => setTimeout(resolve, delay));
async function main() {
    await waitFor(500);
    return 'hello';
}
main;");
Console.WriteLine(result.Call());

[hiperz]

I got the same problem.