buildbot exception in on ofbizTrunkFramework

[buildbot]

The Buildbot has detected a build exception on builder ofbizTrunkFramework 
while building . Full details are available at:
    https://ci.apache.org/builders/ofbizTrunkFramework/builds/1157

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

Buildslave for this Build: asf947_ubuntu

Build Reason: The AnyBranchScheduler scheduler named 'onTrunkFrameworkCommit' 
triggered this build
Build Source Stamp: [branch ofbiz/ofbiz-framework/trunk] 1868911
Blamelist: 

BUILD FAILED: exception upload

Sincerely,
 -The Buildbot