buildbot failure in on ofbizBranch18FrameworkPlugins

[buildbot]

The Buildbot has detected a new failure on builder 
ofbizBranch18FrameworkPlugins while building ofbiz-framework. Full details are 
available at:
    https://ci.apache.org/builders/ofbizBranch18FrameworkPlugins/builds/369

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

Buildslave for this Build: asf947_ubuntu

Build Reason: downstream
Build Source Stamp: [branch release18.12] 
0d285ccaebecf80498479e5317584bf17c7c1a7a
Blamelist: Suraj Khurana <sur...@apache.org>

BUILD FAILED: failed shell_6

Sincerely,
 -The Buildbot