buildbot exception in on ofbizTrunkFramework

[buildbot]

The Buildbot has detected a build exception on builder ofbizTrunkFramework while building ofbiz-framework. Full details are available at:
    https://ci.apache.org/builders/ofbizTrunkFramework/builds/1489

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

Buildslave for this Build: asf946_ubuntu

Build Reason: The AnyBranchScheduler scheduler named 'onTrunkFrameworkCommit' triggered this build
Build Source Stamp: [branch trunk] 50857f15056e5e27e31a241ad2b23a0ad13c2aa5
Blamelist: Pierre Smits <[hidden email]>

BUILD FAILED: exception shell_1 upload

Sincerely,
 -The Buildbot