Same for me as well but after walking forward awhile I saw the land but the demon had to kill me in order to get on it (I was actually under the map and couldn't get up). After that I was able to continue even after beating the game. I found some weird things and the people I killed were ghosts I think. Idk. But it would've been easier if I restarted all the way back home rather than having to walk a big way just to get killed. One more thing that was odd is that the boss spawned at the same place even though I beat him meaning I could beat the game a second time in the same file. Lol.