Earlier quoted context omitted.
And this is an organizational failure, because the organisation has just promoted, without training someone to be a leader. You wouldn't expect a manager (from a non-technical background) to just start coding, so why would you expect a coder to just start managing.
Most places that "train" just have some online courses, maybe an in-person or two. I don't know of anywhere that has some sort of real training like apprentice program.
Who knew? An MBA mindset contained inside a 1 hour mindset!1 Why did these MBA guys spend $250K!?