This probably means that the solder jumpers on both the high and low sides are not making connection. Use some small gauge wire and run some jumpers as in the picture…
This bypasses JP2 and JP4. But you also need to make sure that JP3 and JP1 are soldered correctly. You can see if JP1 and JP3 are connected properly if both the green pads are connected and both the blue pads are connected…use your continuity tester.
If they are not connected, to fix them you can get a tiny bare wire (like a short component lead) and solder that to the 2 pads of the solder jumper…if that helps to get the connection made.
-Brach