Huh, ok. I'm guessing "ItemGravityRod" is the one that lets you fly for a short time. Also it's mentioning an armor stand from Traveler's Gear in the first log, claiming that the gravity rod is trying to go into one of the baubles slots I think. The second one is the gravity rod trying to go into one of the baubles slots in your inventory I believe.
So, in case I'm wrong about what the gravity rod actually is, what Botania things are you carrying around right now?
Rod of the shaded mesa and rod of the skies(lot of other things but nothing that can have anything with gravity) The rod of the shaded mesa allows you to move mobs around at the cost of some mana, it denies gravity and it is the one that is trying to get in there.
The rod of the skies is just propelling you up in the sky at the cost of some mana, I don't think it does much with gravity, so it may not be that.
And yes I have the travellers gear armor stand, and THAT is causing the issue(maybe) but since it does the same thing on player's baubles inventory, I don't know what exactly is causing that.