[GraphHopper] Shortest route failed (ferry issue?)

[Martin Sauvage]

Hello,

I'm facing an issue when routing with shortest path between these 2 GPS
points:
47.194150,-1.676384
47.197470,-1.671832

Caused by: java.lang.IllegalStateException: Speed cannot be 0 for unblocked
edge, use access properties to mark edge blocked! Should only occur for
shortest path calculation. See #242.

I suspect the shortest route tries to take the ferry (Bac Indret) with no
defined speed while the fastest route provides:
https://graphhopper.com/maps/?point=47.19415%2C-1.676384&point=47.19747%2C-1.671832&locale=fr-FR&layer=Lyrk

Is it a GH bug or an OSM data issue? Is there any way to fix this crash (do
not take ferry with shortest route) ?

Thanks,
Martin
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