The aircraft, a Boeing 787-9 registered as C-FVLU, was not carrying passengers at the time of the incident – which would have been during the early morning hours of December 20th. While the aircraft wasn’t carrying passengers at the time, it was likely on its way to the terminal. (simpleflying.com) さらに...
It was the maintenance crew taking the aircraft from the maintenance hangar to the terminal that did it. They don't need a "license" to taxi an aircraft. They'll probably get some additional training in ground handling however.