Mobile Siteplan Error - Caused by: java.net.UnknownHostException

(Doc ID 2046077.1)

Last updated on NOVEMBER 03, 2016

Applies to:

Oracle WebCenter Sites - Version 11.1.1.8.0 and later
Information in this document applies to any platform.

Symptoms

When clicking on a page under the mobile siteplan , the following error is shown: An exception occurred on the server while executing UI/Layout/CenterPane/Advanced: UIException: . If problem persists please contact the system administrator.
this error doesn't show up in other siteplans and it is also only occurring on some computers.

This error does not occur when accessing the site from an internal URL.
Errors in the logs are:

[2015-07-21 07:54:42,978 UTC] [ERROR] [.kernel.Default (self-tuning)'] [fatwire.logging.cs.jsp] Failure executing JSPfatwire/ui/controller/controller Exception calling include:  page:/jsp/cs_deployed/fatwire/ui/controller/controller.jsp

com.fatwire.cs.ui.framework.UIException tossed:null

[2015-07-21 07:54:42,978 UTC] [ERROR] [.kernel.Default (self-tuning)'] [fatwire.logging.cs.request] COM.FutureTense.Common.ContentServerException: Unable to evaluate element fatwire/ui/controller/controller Error code:UNABLE TO EVAL ELEMENT

[2015-07-21 07:54:42,976 UTC] [ERROR] [.kernel.Default (self-tuning)'] [fatwire.logging.cs.request] Exception including resource /jsp/cs_deployed/UI/Layout/CenterPane/AdvancedAction.jsp
javax.imageio.IIOException: Can't get input stream from URL!
....
Caused by: java.net.UnknownHostException: sites.example.com

               at java.net.InetAddress.getAllByName0(InetAddress.java:1250)

               at java.net.InetAddress.getAllByName(InetAddress.java:1162)

Cause

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