buildbot failure in on ofbizTrunkFrameworkPlugins

[buildbot]

The Buildbot has detected a new failure on builder ofbizTrunkFrameworkPlugins 
while building . Full details are available at:
    https://ci.apache.org/builders/ofbizTrunkFrameworkPlugins/builds/458

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

Buildslave for this Build: silvanus_ubuntu

Build Reason: downstream
Build Source Stamp: [branch ofbiz/ofbiz-framework/trunk] 1844220
Blamelist: jnicolas

BUILD FAILED: failed shell_4

Sincerely,
 -The Buildbot