The front entrance on the south side has a lot of activity of different types. Electrical devices have issues there, even simple flashlights can fail. The fun moments are when multiple flashlights fail at the very same time.
Your gimbal is not the first gimbal to have issues while visiting the area. If memory serves, I watched a video of yours recently showing the issue. It could have been someone else's video but I forgot to talk about the gimbal use and possible explanations for the failures on a new You Tube video of mine.
I'll get around to it at some point and post a link to it here.
Pete