@chibihappyme @crinrict Something similar happened in my game for a while. It was happening any time I tried to get to any lot in Magnolia Promenade but I didn't have any sims on any of those lots at the time. I could get to the map but not to any lots in either live or build mode and every time I tried, the game just sent me back to the manage worlds screen. Didn't matter how I tried to get there either. But in my case, it was the Pre DU patch that caused it and it got fixed with the December patch. There were a lot of posts from a number of people who couldn't get to certain places but where those places were varied widely. This may be something similar and is showing up after the January 16 patch but I have not seen any other posts where people are still having this problem so it very well may be something else.
@chibihappyme From the video, I can see that 2 sims are still at the Bluffs. Are you able to open the home lot and get them home by clicking on the greyed out portraits at the bottom? You may not be able to if they are the only sims in the household and you can't open the home lot which as far as I can tell, appears to be the case. There is another way that may work though if all you want to do get your sims to a place you can play them again. But before you try, you should make a back up of your saves folder and put it somewhere safe just in case.
You can try moving the stuck sims out of their home lot by eviction and then putting them back in the same or another lot. Or you can try merging them with another household in manage worlds and then splitting the new household back up and then moving them back into a lot. Once you've gotten those two sims out of the Bluffs and back to where you can play them, then try traveling back to see if the lot opens and if it does, you should be ok. If it doesn't, well, you probably have something else going on.