More than a year after the first legal pot shop opened, there are only 34 licensed sellers in the five boroughs, but an unassuming customer can wander into an illegal weed dispensary (or two) on seemingly every block in the city.

It’s been two years since The Post started flagging the explosion of iIlegal pot shops, and they still plague the city flipping the middle finger to law and order as every neighborhood stares at crim…