I am trying to integrate Confluence Publisher Plugin.

I have correctly provide

1) Confluence Site
2) Space
3) Page
4) Artifacts

parameters. When I am trying to build I am getting error

ERROR: Publisher com.myyearbook.hudson.plugins.confluence.ConfluencePublisher aborted due to exception
java.lang.NullPointerException
at com.myyearbook.hudson.plugins.confluence.ConfluencePublisher.findArtifacts(ConfluencePublisher.java:445)
at com.myyearbook.hudson.plugins.confluence.ConfluencePublisher.performAttachments(ConfluencePublisher.java:182)
at com.myyearbook.hudson.plugins.confluence.ConfluencePublisher.perform(ConfluencePublisher.java:314)
at hudson.tasks.BuildStepMonitor$3.perform(BuildStepMonitor.java:45)
at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:784)
at hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:756)
at hudson.model.Build$BuildExecution.post2(Build.java:183)
at hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:705)
at hudson.model.Run.execute(Run.java:1695)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:231)
Finished: FAILURE