I am unable to scp a jar file to my remote server as a post build step, I keep getting the following exception

[SCP] Connecting to "Server"
ERROR: Failed to upload files
4:
at com.jcraft.jsch.ChannelSftp.stat(ChannelSftp.java:1720)
at be.certipost.hudson.plugin.SCPSite.upload(SCPSite.java:188)
at be.certipost.hudson.plugin.SCPRepositoryPublisher.perform(SCPRepositoryPublisher.java:211)
at hudson.tasks.BuildStepMonitor$3.perform(BuildStepMonitor.java:45)
at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:770)
at hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:734)
at hudson.model.Build$BuildExecution.post2(Build.java:183)
at hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:683)
at hudson.model.Run.execute(Run.java:1784)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
at hudson.model.ResourceController.execute(ResourceController.java:89)
at hudson.model.Executor.run(Executor.java:240)
Caused by: java.lang.StringIndexOutOfBoundsException: String index out of range: 0
at java.lang.String.charAt(String.java:658)
at com.jcraft.jsch.ChannelSftp.remoteAbsolutePath(ChannelSftp.java:2359)
at com.jcraft.jsch.ChannelSftp.stat(ChannelSftp.java:1711)
... 11 more
Build step 'Publish artifacts to SCP Repository' changed build result to UNSTABLE
Finished: UNSTABLE

Can Someone please help?