"Loss of situational awareness caused collision with building"
For those who don't have the time to read the entire report, here is a "probable cause/s" summary taken from the report:
"The loss of situational awareness caused the crew to taxi straight ahead on the wrong path, crossing the intersection/junction of Bravo and Mike instead of following Bravo where it turns off to the right and leads to the Category 2 holding point. Following aircraft stand taxi lane Mike; they collided with a building on the righthand side of Mike.
"Contributory Factors: The crew did not conduct a briefing to discuss the cleared route, nor did they refer to the correct taxiway information in chart 10-6. In combination with the ground movement visual aids, this created confusion and loss of situational awareness when taxiing on taxiway Bravo."