As Nella, Malaika, and Owen flee from Hazel's home in Harlem, they are seen running down the steps to the 14th St / 6th Ave station, where they get on the D train. This is an error both because 14th St is about 100 blocks downtown from Harlem, and because the D train does not stop at that station (or anywhere else on 14th St, at least not in 2023 when the show is set)