buildbot failure in on ofbizBranch18FrameworkPlugins

[buildbot]

The Buildbot has detected a new failure on builder 
ofbizBranch18FrameworkPlugins while building . Full details are available at:
    https://ci.apache.org/builders/ofbizBranch18FrameworkPlugins/builds/73

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

Buildslave for this Build: silvanus_ubuntu

Build Reason: downstream
Build Source Stamp: [branch ofbiz/ofbiz-framework/branches/release18.12] 1857155
Blamelist: jleroux

BUILD FAILED: failed shell_5

Sincerely,
 -The Buildbot