buildbot failure in on openoffice-win7

[buildbot]

The Buildbot has detected a new failure on builder openoffice-win7 while 
building . Full details are available at:
    https://ci.apache.org/builders/openoffice-win7/builds/4

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

Buildslave for this Build: bb-win10

Build Reason: forced: by IRC user <asf_petko> (privmsg): test
Build Source Stamp: HEAD
Blamelist: 

BUILD FAILED: failed externals

Sincerely,
 -The Buildbot