If it is fuel exhaustion it’s unlikely the result of a single miscalculation.
Years ago I worked for a compnany where a similar incident occurred. Fortunately, as in this case there were no injuries or aircraft damage. CAA as it was known back then suspended the Captain’s license for 28 days, and company management gave an undertaking to oversea and retrain the pilot involved.
Of course the real and complex administrative and human factors that led to the incident were never uncovered.