java.lang.NullPointerException: This exception has no message.
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java.lang.NullPointerException:
at org.dotcms.plugins.XMLSitemap.thread.XMLSitemapThread.closeFileWriter(XMLSitemapThread.java:722)
at org.dotcms.plugins.XMLSitemap.thread.XMLSitemapThread.generateSitemapPerHost(XMLSitemapThread.java:455)
at org.dotcms.plugins.XMLSitemap.thread.XMLSitemapThread.execute(XMLSitemapThread.java:130)
at org.quartz.core.JobRunShell.run(JobRunShell.java:223)
at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:549)