When the destination article has no incoming links (orphaned article), the site correctly declares that no paths exist. However, if the starting article is a dead-end (no outgoing links), it thinks for a long time before declaring that the start article does not exist.
I think this was due to the database being outdated and it not including the "Movement-Japa" page. This is now fixed now that the database has been updated to Dec 20, 2023: