Hi Vatsal,
The connection of the speed control pot is incorrect and can lead to a short. Pins 2 and 3 are reversed in the schematic.
The best approach at this time is to either remove the pot, or cut the trace from pin 2 to 3V3 on the back of the board. Both of these will cause the pot to be unusable, but will prevent a possible short from 3V3 to GND. See image below for recommended cut location on the back of the board.
