buildbot exception in on ofbizTrunkFrameworkPlugins

[buildbot]

The Buildbot has detected a build exception on builder ofbizTrunkFrameworkPlugins while building ofbiz-plugins. Full details are available at:
    https://ci.apache.org/builders/ofbizTrunkFrameworkPlugins/builds/1293

Buildbot URL: https://ci.apache.org/

Buildslave for this Build: asf947_ubuntu

Build Reason: The AnyBranchScheduler scheduler named 'onTrunkPluginsCommit' triggered this build
Build Source Stamp: [branch trunk] 1cacb150000f271f6599d24146b9307f3223f446
Blamelist: Jacques Le Roux <[hidden email]>

BUILD FAILED: exception shell_4 upload_2

Sincerely,
 -The Buildbot