Hi Dan,

From experience I guessed the problem would be on a node along the way. Dragging end point of Komoot route along the footway confirmed that the issue was the tagging on the gates.

An error has been made and the gates have locked=yes. Which means no access through the gate.

I tried to create on Overpass search to show locked gates on public rights of way. But I wasn't up to the task.

The search below is a more basic and shows anything tagged locked=yes. So will help you find the locked gates.

https://overpass-turbo.eu/s/1N6A