Receive "Unable to Load Dashboard Definitions" from the wrench icon Preferences option when trying to default a dashboard.

Document ID : KB000113510
Last Modified Date : 11/09/2018
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After creating a dashboard and trying to set it as a default dashboard from the wrench icon in the dashboard portlet, the following error is generated:

Unable to Load Dashboard Definitions

No dashboards are displayed for the wrench Preferences.
Several dashboards were created and saved.  Restarting the UMP robot does not resolve this error.
UIM/UMP 8.51
The dashboards were not published.
Publish the dashboards