buildbot failure in on ofbizBranch18FrameworkPlugins

[buildbot]

The Buildbot has detected a new failure on builder ofbizBranch18FrameworkPlugins while building ofbiz-plugins. Full details are available at:
    https://ci.apache.org/builders/ofbizBranch18FrameworkPlugins/builds/477

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

Buildslave for this Build: asf947_ubuntu

Build Reason: The AnyBranchScheduler scheduler named 'onBranch18PluginsCommit' triggered this build
Build Source Stamp: [branch release18.12] 5ab0a6aa2f26bf16e206c36a3c98b026d775fc5d
Blamelist: Jacques Le Roux <[hidden email]>

BUILD FAILED: failed shell_7

Sincerely,
 -The Buildbot