release prepare : when generate-reactor-projects can't resolve transitively dependency.

[INFO] Updating local copy against the scm...
[ERROR] org.apache.maven.shared.release.ReleaseExecutionException: Unable to get reactor projects: Failed to build project.
at org.apache.maven.continuum.release.phase.GenerateReactorProjectsPhase.execute(GenerateReactorProjectsPhase.java:82)
at org.apache.maven.shared.release.DefaultReleaseManager.prepare(DefaultReleaseManager.java:194)
at org.apache.maven.shared.release.DefaultReleaseManager.prepareWithResult(DefaultReleaseManager.java:107)
at org.apache.maven.continuum.release.executors.PrepareReleaseTaskExecutor.execute(PrepareReleaseTaskExecutor.java:43)
at org.apache.maven.continuum.release.executors.AbstractReleaseTaskExecutor.executeTask(AbstractReleaseTaskExecutor.java:67)
at org.codehaus.plexus.taskqueue.execution.ThreadedTaskQueueExecutor$ExecutorRunnable$1.run(ThreadedTaskQueueExecutor.java:116)
at edu.emory.mathcs.backport.java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:442)
at edu.emory.mathcs.backport.java.util.concurrent.FutureTask.run(FutureTask.java:176)
at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:665)
at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:690)
at java.lang.Thread.run(Thread.java:595)
Caused by: org.apache.maven.continuum.release.ContinuumReleaseException: Failed to build project.
at org.apache.maven.continuum.release.phase.GenerateReactorProjectsPhase.addModules(GenerateReactorProjectsPhase.java:169)
at org.apache.maven.continuum.release.phase.GenerateReactorProjectsPhase.getReactorProjects(GenerateReactorProjectsPhase.java:109)
at org.apache.maven.continuum.release.phase.GenerateReactorProjectsPhase.execute(GenerateReactorProjectsPhase.java:78)
... 10 more
Caused by: org.apache.maven.artifact.resolver.MultipleArtifactsNotFoundException: Missing:
----------
1) fr.paris.lutece:lutece-core:lutece-core:2.1.2

Try downloading the file manually from the project website.

Then, install it using the command:
mvn install:install-file -DgroupId=fr.paris.lutece -DartifactId=lutece-core \
-Dversion=2.1.2 -Dpackaging=lutece-core -Dfile=/path/to/file

Path to dependency:
1) fr.paris.lutece.plugins:lutece-plugins-pom:pom:2.6-SNAPSHOT
2) fr.paris.lutece.plugins:library-lutece-unit-testing:jar:2.0.2
3) fr.paris.lutece:lutece-core:lutece-core:2.1.2

----------
1 required artifact is missing.

for artifact:
fr.paris.lutece.plugins:lutece-plugins-pom:pom:2.6-SNAPSHOT

from the specified remote repositories:
central (http://repo1.maven.org/maven2),
codehausSnapshots (http://snapshots.maven.codehaus.org/maven2),
lutece (http://dev.lutece.paris.fr/maven_repository),
luteceSnapshot (http://dev.lutece.paris.fr/snapshot_repository)

at org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolveTransitively(DefaultArtifactResolver.java:305)
at org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolveTransitively(DefaultArtifactResolver.java:272)
at org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolveTransitively(DefaultArtifactResolver.java:253)
at org.apache.maven.project.DefaultMavenProjectBuilder.buildWithDependencies(DefaultMavenProjectBuilder.java:367)
at org.apache.maven.project.DefaultMavenProjectBuilder.buildWithDependencies(DefaultMavenProjectBuilder.java:315)
at org.apache.maven.continuum.release.phase.GenerateReactorProjectsPhase.addModules(GenerateReactorProjectsPhase.java:151)
... 12 more

the Artifact is in my repository and in my local repository.