buildbot failure in on ofbiz-branch16

[buildbot]

The Buildbot has detected a new failure on builder ofbiz-branch16 while building . Full details are available at:
    https://ci.apache.org/builders/ofbiz-branch16/builds/75

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

Buildslave for this Build: silvanus_ubuntu

Build Reason: The AnyBranchScheduler scheduler named 'on-ofbiz16-commit' triggered this build
Build Source Stamp: [branch ofbiz/branches/release16.11] 1800781
Blamelist: mbrohl

BUILD FAILED: failed shell_2

Sincerely,
 -The Buildbot