title: Getting Warning Error in WSO2 for every 30 seconds
body: <p>[date time, 804] [Iot - Core] WARN - FileSystemPreferences Could not lock System prefs. Unix error code 0.</p>
  
  <p>[date time, 805] [Iot - Core] WARN - FileSystemPreferences Couldn't Flush system prefs: java.util.prefs.BackingStoreException: Couldn't get file lock.</p>