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  <title>Unable to process file version</title>
  <link rel="self" href="https://liferay.dev/c/message_boards/find_thread?p_l_id=119785294&amp;threadId=120424037" />
  <subtitle>Unable to process file version</subtitle>
  <id>https://liferay.dev/c/message_boards/find_thread?p_l_id=119785294&amp;threadId=120424037</id>
  <updated>2026-04-03T21:50:23Z</updated>
  <dc:date>2026-04-03T21:50:23Z</dc:date>
  <entry>
    <title>RE: Unable to process file version</title>
    <link rel="alternate" href="https://liferay.dev/c/message_boards/find_message?p_l_id=119785294&amp;messageId=120425390" />
    <author>
      <name>Olaf Kock</name>
    </author>
    <id>https://liferay.dev/c/message_boards/find_message?p_l_id=119785294&amp;messageId=120425390</id>
    <updated>2020-11-11T18:03:17Z</updated>
    <published>2020-11-11T09:54:03Z</published>
    <summary type="html">&lt;p&gt;There's a good possibility that this is on preview generation. And it
  seems that your old system was configured to use Ghostview, which
  doesn't seem to be available on the new system.&lt;/p&gt;
&lt;p&gt;Great way to demonstrate that a backup may only be called a backup if
  it has recently been demonstrated to be restorable to a completely new
  system and work smoothly. This is your test for the Restore operation,
  and demonstrates that you still have something to do. Check where your
  system expects ghostscript, install it and try again. Or disable the
  use of external ghostscript&lt;/p&gt;</summary>
    <dc:creator>Olaf Kock</dc:creator>
    <dc:date>2020-11-11T09:54:03Z</dc:date>
  </entry>
  <entry>
    <title>Unable to process file version</title>
    <link rel="alternate" href="https://liferay.dev/c/message_boards/find_message?p_l_id=119785294&amp;messageId=120424036" />
    <author>
      <name>Deepak Panda</name>
    </author>
    <id>https://liferay.dev/c/message_boards/find_message?p_l_id=119785294&amp;messageId=120424036</id>
    <updated>2020-11-11T18:03:17Z</updated>
    <published>2020-11-10T16:51:00Z</published>
    <summary type="html">&lt;p&gt;Hi,&lt;/p&gt;
&lt;p&gt;Recently I have reconfigure my liferay(Same old version) in new
  server IP with old database. Also copied document_library folder in
  &amp;quot;/data/&amp;quot; folder. It is all ok, but always receive below
  warning multiple times. Kindly provide any resolution for the same,
  how I will stop it.&lt;/p&gt;
&lt;p&gt; &lt;/p&gt;
&lt;p&gt;WARN
   [liferay/document_library_pdf_processor-1][BaseProcessorMessageListener:40]
  Unable to process file version
  36571&lt;br /&gt;java.lang.NullPointerException&lt;br /&gt;    at
  java.lang.ProcessBuilder.start(ProcessBuilder.java:1012)&lt;br /&gt;    at
  com.liferay.petra.process.ProcessUtil.execute(ProcessUtil.java:55)&lt;br /&gt;  
   at
  com.liferay.portal.image.GhostscriptImpl.execute(GhostscriptImpl.java:75)&lt;br /&gt;  
   at
  com.liferay.portal.kernel.image.GhostscriptUtil.execute(GhostscriptUtil.java:26)&lt;br /&gt;  
   at
  com.liferay.portlet.documentlibrary.util.PDFProcessorImpl._generateImagesGS(PDFProcessorImpl.java:563)&lt;br /&gt;  
   at
  com.liferay.portlet.documentlibrary.util.PDFProcessorImpl._generateImagesGS(PDFProcessorImpl.java:499)&lt;br /&gt;  
   at
  com.liferay.portlet.documentlibrary.util.PDFProcessorImpl._generateImages(PDFProcessorImpl.java:397)&lt;br /&gt;  
   at
  com.liferay.portlet.documentlibrary.util.PDFProcessorImpl._generateImages(PDFProcessorImpl.java:429)&lt;br /&gt;  
   at
  com.liferay.portlet.documentlibrary.util.PDFProcessorImpl.generateImages(PDFProcessorImpl.java:109)&lt;br /&gt;  
   at
  com.liferay.document.library.kernel.util.PDFProcessorUtil.generateImages(PDFProcessorUtil.java:34)&lt;br /&gt;  
   at
  com.liferay.portlet.documentlibrary.messaging.PDFProcessorMessageListener.generate(PDFProcessorMessageListener.java:30)&lt;br /&gt;  
   at
  com.liferay.portlet.documentlibrary.messaging.BaseProcessorMessageListener.doReceive(BaseProcessorMessageListener.java:36)&lt;br /&gt;  
   at
  com.liferay.portal.kernel.messaging.BaseMessageListener.receive(BaseMessageListener.java:26)&lt;br /&gt;  
   at
  com.liferay.portal.kernel.messaging.InvokerMessageListener.receive(InvokerMessageListener.java:74)&lt;br /&gt;  
   at
  com.liferay.portal.kernel.messaging.SerialDestination$1.run(SerialDestination.java:58)&lt;br /&gt;  
   at
  com.liferay.portal.kernel.concurrent.ThreadPoolExecutor$WorkerTask._runTask(ThreadPoolExecutor.java:752)&lt;br /&gt;  
   at
  com.liferay.portal.kernel.concurrent.ThreadPoolExecutor$WorkerTask.run(ThreadPoolExecutor.java:664)&lt;br /&gt;  
   at java.lang.Thread.run(Thread.java:748)&lt;/p&gt;</summary>
    <dc:creator>Deepak Panda</dc:creator>
    <dc:date>2020-11-10T16:51:00Z</dc:date>
  </entry>
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