Hi guys , feel abit silly but it’s better being safe than sorry , iv been fly my new Drone for around a month now without any issues at all until the other day when I noticed that when flying I only had one of the two rear lights flashing green , the other light wasn’t lit up at all , iv looked into this online but can’t really find a clear answer , iv watched loads of YouTube videos and most drones have two green lights lit up at the rear , is this an issue or is it normal ? I’m flying a phantom 3 advanced and I’m based in the uk ,,, any help would be great as I’m not flying her until I’m 100 percent it’s safe to fly ,, cheers guys