no path to map

okay so i do not know how to upload an image here but let me paint you a picture, there's a boss in the middle of a typhoon at water edge and i can see the tendrils from the surrounding maps leading to it, and yet one of these maps is surrounded by other maps and completely un accessible, not path from ANYWHERE leads to it its simply not able to be done why is the pathing between maps still so messed up. it literally has NO yellow dashed line from anywhere leading to it. Ergo i can not do that boss because a map contributing to accessing it is locked away by this horrendous generated seed.