Armourer Villagers struggle to pathfind to their workstation

Seed: 2634077510840829713

Coordinates: 669 83 534

The house under you has a villager that wants to be the Armourer. But he is failing to pathfind to the workstation, as you can see in this video: https://www.youtube.com/watch?v=lJsOoprFPf0