Humanoid is not loaded when Character is loaded?

@Controller()
export class PlayerAnimation implements OnStart {
    onStart() {
        print("Start");
        const localPlayer = Players.LocalPlayer;
        const animation = createPreviewAnimation(carryKeyframeSequence);

        if (!animation) {
            warn("Animation was not created");
            return;
        }

        const character = localPlayer.Character || localPlayer.CharacterAdded.Wait()[0];
        const humanoid = character.FindFirstChildOfClass("Humanoid");
        if (!humanoid) {
            warn("Humanoid was not found");
            return;
        }
        //...
    }
}

@Controller()
export class PlayerAnimation implements OnStart {
    onStart() {
        print("Start");
        const localPlayer = Players.LocalPlayer;
        const animation = createPreviewAnimation(carryKeyframeSequence);

        if (!animation) {
            warn("Animation was not created");
            return;
        }

        const character = localPlayer.Character || localPlayer.CharacterAdded.Wait()[0];
        const humanoid = character.FindFirstChildOfClass("Humanoid");
        if (!humanoid) {
            warn("Humanoid was not found");
            return;
        }
        //...
    }
}