Missing artifact exception in log (org.eclipse.equinox:region)

When starting opendaylight controller there is a warning in the karaf log with the following exception :

:jar:1.0.0.v20110506:Could not find artifact org.eclipse.equinox:region:jar:1.0.0.v20110506 in defaultlocal (file:/opt/opendaylight/system/)
shaded.org.eclipse.aether.resolution.ArtifactResolutionException: Could not find artifact org.eclipse.equinox:region:jar:1.0.0.v20110506 in defaultlocal (file:/opt/opendaylight/system/)
at shaded.org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:444)
at shaded.org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifacts(DefaultArtifactResolver.java:246)
at shaded.org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifact(DefaultArtifactResolver.java:223)
at shaded.org.eclipse.aether.internal.impl.DefaultRepositorySystem.resolveArtifact(DefaultRepositorySystem.java:294)
at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.resolve(AetherBasedResolver.java:476)
at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.resolve(AetherBasedResolver.java:433)
at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.resolve(AetherBasedResolver.java:411)
at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.resolve(AetherBasedResolver.java:386)
at org.ops4j.pax.url.mvn.internal.Connection.getInputStream(Connection.java:124)
....
Caused by: shaded.org.eclipse.aether.transfer.ArtifactNotFoundException: Could not find artifact org.eclipse.equinox:region:jar:1.0.0.v20110506 in defaultlocal (file:/opt/opendaylight/system/)
at shaded.org.eclipse.aether.connector.basic.ArtifactTransportListener.transferFailed(ArtifactTransportListener.java:39)
at shaded.org.eclipse.aether.connector.basic.BasicRepositoryConnector$TaskRunner.run(BasicRepositoryConnector.java:355)
at shaded.org.eclipse.aether.util.concurrency.RunnableErrorForwarder$1.run(RunnableErrorForwarder.java:67)
at shaded.org.eclipse.aether.connector.basic.BasicRepositoryConnector$DirectExecutor.execute(BasicRepositoryConnector.java:581)
at shaded.org.eclipse.aether.connector.basic.BasicRepositoryConnector.get(BasicRepositoryConnector.java:249)
at shaded.org.eclipse.aether.internal.impl.DefaultArtifactResolver.performDownloads(DefaultArtifactResolver.java:520)
at shaded.org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:421)
... 59 more
2016-01-27 13:57:55,053 | WARN | Event Dispatcher | FeaturesServiceImpl | 20 - org.apache.karaf.features.core - 3.0.3 | Error when installing feature region: java.io.IOException: Error resolving artifact org.eclipse.equinox:region:jar:1.0.0.v20110506: Could not find artifact org.eclipse.equinox:region:jar:1.0.0.v20110506 in defaultlocal (file:/opt/opendaylight/sys