Make it more obvious why routing fails when using a long route with GPX Smart and the offline profile

[PureTryOut]

I'm trying to plan a road-trip in Norway and for this I currently have a global route of about 4K KM. I wanted to see how well Pure-Maps handles such routes and although GPX works, GPX Smart fails. Although osmscout-server prints a useful warning, Pure-Maps only shows "Routing failed".

The console of osmscout-server shows Exception in Valhalla: Path distance exceeds the max distance limit.

This is happening with the offline profile and it seems Valhalla is the one failing on it. Use the attached GPX file to reproduce. Roadtrip Noorwegen.zip

[rinigus]

While it will not tell what is the reason for failing, "Routing failed" is displayed by Pure Maps in this case. Taking into account many reasons it can happen (for Valhalla, failing by set limits as you found, also several other options), I will keep it on this level. At least for now