buildbot exception in on ofbizTrunkFrameworkPlugins

[buildbot]

The Buildbot has detected a build exception on builder 
ofbizTrunkFrameworkPlugins while building . Full details are available at:
    https://ci.apache.org/builders/ofbizTrunkFrameworkPlugins/builds/805

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

Buildslave for this Build: silvanus_ubuntu

Build Reason: downstream
Build Source Stamp: [branch ofbiz/ofbiz-framework/trunk] 1859871
Blamelist: jleroux

BUILD FAILED: exception shell_2 upload_1

Sincerely,
 -The Buildbot