Remember that pedestrian zones still need "Service Points" at the edge of the district so garbage trucks and delivery vans can drop off goods.
It looks like you’re referencing a specific version of (1.15.0-f7, which was the Plazas & Promenades update). Cities.Skylines.v.1.15.0.f7.rar
If you are using mods, ensure your Traffic Manager: President Edition is updated to match this version. Older versions often break pathfinding after the 1.15 update. Remember that pedestrian zones still need "Service Points"
New high-density residential, commercial, and office "wall-to-wall" buildings that give your city a tighter, urban look. 2. Quick Optimization Tips Older versions often break pathfinding after the 1
If you are installing this specific version manually (from a .rar file), be careful with the . Most modern mods have moved on to versions compatible with Cities: Skylines II or the final "Hubs & Transport" updates (v.1.17+). You may need to hunt for "Legacy" versions of popular mods like Move It or Anarchy .