failed to load default map graphite emitter

[b-slim]

I added the graphite extension, but know, even though it is present :

root@druid:/# ls -la /root/imply-1.2.0/dist/druid/extensions/graphite-emitter/graphite-emitter-0.9.0.jar
-rw-r--r-- 1 root root 22022 May  3 11:44 /root/imply-1.2.0/dist/druid/extensions/graphite-emitter/graphite-emitter-0.9.0.jar

I get this error :

Caused by: java.io.FileNotFoundException: file:/root/imply-1.2.0/dist/druid/extensions/graphite-emitter/graphite-emitter-0.9.0.jar!/defaultWhiteListMap.json (No such file or directory)
        at java.io.FileInputStream.open0(Native Method)
        at java.io.FileInputStream.open(FileInputStream.java:195)
        at java.io.FileInputStream.<init>(FileInputStream.java:138)
        at com.google.common.io.Files$FileByteSource.openStream(Files.java:126)
        at com.google.common.io.Files$FileByteSource.openStream(Files.java:116)
        at com.google.common.io.ByteSource$AsCharSource.openStream(ByteSource.java:434)
        at com.google.common.io.CharSource.read(CharSource.java:161)
        at io.druid.emitter.graphite.WhiteListBasedConverter.readMap(WhiteListBasedConverter.java:256)
        at io.druid.emitter.graphite.WhiteListBasedConverter.<init>(WhiteListBasedConverter.java:86)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at com.fasterxml.jackson.databind.introspect.AnnotatedConstructor.call(AnnotatedConstructor.java:125)
        at com.fasterxml.jackson.databind.deser.std.StdValueInstantiator.createFromObjectWith(StdValueInstantiator.java:230)