Did you test the wiring while it was out of the body, like this? Was it working before you installed it?
The wiring looks generally OK and, while it’s difficult to be certain from the images, it looks likely that one of the ‘hot’ lugs on the pots or related connections is touching the copper shielding and shorting your signal to ground. Possibly even the jack ‘hot’ arm is shorting on the shielding when you insert a plug, as the arm flexes outward and can make contact on the hole’s lining in some cases
Double check everything is working outside the body and, if it is, then placing some insulating electrical tape over the copper in strategic places, like below and to the side of where the pots lugs will sit and in the hole for the jack where the hot arm sits may solve it.