Oozie Fails To Restart During Upgrade Because of Missing ExtJS Library

Traceback (most recent call last):
  File "/var/lib/ambari-agent/cache/common-services/OOZIE/4.0.0.2.0/package/scripts/oozie_server.py", line 150, in <module>
    OozieServer().execute()
  File "/usr/lib/python2.6/site-packages/resource_management/libraries/script/script.py", line 367, in execute
    method(env)
  File "/usr/lib/python2.6/site-packages/resource_management/libraries/script/script.py", line 946, in restart
    self.pre_upgrade_restart(env, upgrade_type=upgrade_type)
  File "/var/lib/ambari-agent/cache/common-services/OOZIE/4.0.0.2.0/package/scripts/oozie_server.py", line 123, in pre_upgrade_restart
    OozieUpgrade.prepare_libext_directory(upgrade_type=upgrade_type)
  File "/var/lib/ambari-agent/cache/common-services/OOZIE/4.0.0.2.0/package/scripts/oozie_server_upgrade.py", line 113, in prepare_libext_directory
    raise Fail("Unable to find any Oozie source extension files from the following paths {0}".format(source_ext_zip_paths))
resource_management.core.exceptions.Fail: Unable to find any Oozie source extension files from the following paths ['/usr/share/HDP-oozie/ext-2.2.zip', '/var/lib/oozie/ext-2.2.zip']