

Newbie trying to solve ERC "pin not connected" errors
Hi, I have a functioning circuit on a stripboard (a simple buffer for a bass guitar) and a friend said "why don't you make it on a PCB it'll look much better, use KiCad it's easy to do" so yesterday I downloaded KiCad and now I'm bashing my head against the inevitable errors...
I have made sure that the connector wires are actually connected to the endpoints of each component (using Drag mode) and tried both connecting the component directly to the buses (top rail is going to be fed via phantom power through the Ring connector on the right, bottom rail is going to ground), or using bus entries. The audio signal from the pickups is going to come in from the left side (IN1) and go to the RING of a TRS output jack (which is also where the 48V DC phantom power is coming through); all grounds go to the sleeve of said TRS jack.
So the million Lira question is: can anyone help me figure out what I have forgotten/omitted/done wrong in the editor? Not looking for review or feedback on the schematic itself of course, just how to format for KiCad to be able to process it without error.