I get ERC error "pin not driven" what should I do?

[der.ule]

ErrType(3): Pin connected to some others pins but no pin to drive it

Additional reading about pin types in general: Electrical type of schematic symbol pins (KiCad 4 and KiCad 5) A good explanation about power symbols can be found in this stackexchange answer by @Seth_h KiCad does check if every component is connected to supply lines (*1) as a missing supply is a common mistake to make. Getting the error “ErrType(3): Pin connected to some others pins but no pin to drive it” means that KiCad thinks that some supply pin is not properly connected. Either because …

Electrical type of schematic symbol pins (KiCad 4 and KiCad 5)

What are electrical types used for? The electrical type is used by the electrical rule check (ERC) to determine if you made an obvious mistake. ERC is really quite limited. All it does is read all electrical types of pins connected to a particular net and check their combination against the error matrix. Example: By default connecting two output pins together will result in an error. (Makes sense as one output can be high and one can be low resulting in a short circuit between the positive supp…

https://forum.kicad.info/t/how-to-solve-this-problem/21206

https://forum.kicad.info/t/errtype-pin-connected-to-other-pins-but-not-driven-by-any-pin/16934

https://forum.kicad.info/t/pin-connected-to-other-pins-but-not-driven-by-any-pin/16788/21

https://forum.kicad.info/t/pin-not-driven-erc-error-with-common-mode-choke/22566

https://forum.kicad.info/t/error-pin-not-driven-error-use-of-flags/17002

https://forum.kicad.info/t/erc-gives-a-bunch-of-errors-for-multiple-ics-connected-to-spi-bus/12413/4

I hope this helps

p.s. Your GND and +5V are shortcircuit and the gate of your transistor is always grounded.