graphhopper’s map matching example is to first build the graphhopper web jar, and then call this command:
java -jar web/target/graphhopper-web-3.0-SNAPSHOT.jar server config.yml
this fails with the obvious
java.io.FileNotFoundException: File config.yml not found which is correct, there is no file of that name, at least at the base of the repo.
config-example.yml since that file does exist but that also results in an error:
java.lang.IllegalStateException: Couldn't load from existing folder: graph-cache but also cannot use file for DataReader as it wasn't specified! at com.graphhopper.GraphHopper.importOSM(GraphHopper.java:643) ...
this seems like it may have an obvious fix (no graphs cached yet, load a new graph or something instead), but, i have never used Graphhopper before and don’t know where to begin looking for a solution.