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/479

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

Buildslave for this Build: asf945_ubuntu

Build Reason: downstream
Build Source Stamp: [branch release18.12] 
b40c3d0c78abfe52397249861a6cb83316b99a38
Blamelist: Deepak Dixit <dee...@apache.org>

BUILD FAILED: failed shell_7

Sincerely,
 -The Buildbot