Was hitting AoE on the Mandred's Hold keep door as it was held by Order, and I suddenly got a huge hit spam of around the same damage value (250 to 280) accompanied by this chat window spam. Shoftly after, everything froze as if the server was crashing; soon after, every NPC and player character disappeared from the map as usual when you disconnect from the client somehow but remain in-game.
IndexOutOfRangeException was thrown from GetsTargetFor, what does it mean? xD