Failed to parse configuration at: graphhopper.datareader; Cannot deserialize instance of java.lang.String out of START_OBJECT token at [Source: UNKNOWN; line: -1, column: -1] (through reference chain: com.graphhopper.http.GraphHopperServerConfiguration["graphhopper"]->java.util.LinkedHashMap["datareader"])

[JeongJun-Lee]

Describe the bug
A clear and concise description of what the bug is. Before creating an issue please create a new topic in our forum.

If you have an Android application that uses GraphHopper, use this forum category and include logs and the version of
your Android system.

To Reproduce

Steps to reproduce the behavior.
Refer to https://github.com/graphhopper/graphhopper/blob/master/docs/web/quickstart.md

1. download jar of 0.13 version
2. download a berlin-latest-osm.pbf
3. download config-example.yml
4. java -Ddw.graphhopper.datareader.file=berlin-latest.osm.pbf -jar *.jar server config-example.yml

Instead of a manual reproduction it would be even better to have a unit or integration test reproducing the issue.

Expected behavior
A clear and concise description of what you expected to happen.

System Information
Operating system: Mac OS 10.13.6
JVM: 1.8.0_121_b13
GraphHopper: 0.13

Screenshots & Logs

If applicable, add screenshots and log output.

In case of a routing problem include a link to GraphHopper Maps. Also tell us your expected routing result via additional markers and screenshots.

[karussell]

java -Ddw.graphhopper.datareader.file=berlin-latest.osm.pbf -jar *.jar server config-example.yml

Please use the documentation of 0.13 not master. See also #1921 (comment)

Please use our forum for questions.