我正在尝试创建新工作，但出现此错误：
Unexpected error during job metadata load
at org.pentaho.commons.launcher.Launcher.main (Launcher.java:92)
at java.lang.reflect.Method.invoke (null:-1)
at sun.reflect.DelegatingMethodAccessorImpl.invoke (null:-1)
at sun.reflect.NativeMethodAccessorImpl.invoke (null:-1)
at sun.reflect.NativeMethodAccessorImpl.invoke0 (null:-2)
at org.pentaho.di.ui.spoon.Spoon.main (Spoon.java:710)
at org.pentaho.di.ui.spoon.Spoon.start (Spoon.java:9331)
at org.pentaho.di.ui.spoon.Spoon.waitForDispose (Spoon.java:7949)
at org.pentaho.di.ui.spoon.Spoon.readAndDispatch (Spoon.java:1384)
at org.eclipse.swt.widgets.Display.readAndDispatch (null:-1)
at org.eclipse.swt.widgets.Display.runDeferredEvents (null:-1)
at org.eclipse.swt.widgets.Widget.sendEvent (null:-1)
at org.eclipse.swt.widgets.Display.sendEvent (null:-1)
at org.eclipse.swt.widgets.EventTable.sendEvent (null:-1)
at org.eclipse.jface.action.ActionContributionItem$5.handleEvent (ActionContributionItem.java:402)
at org.eclipse.jface.action.ActionContributionItem.access$2 (ActionContributionItem.java:490)
at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection (ActionContributionItem.java:545)
at org.eclipse.jface.action.Action.runWithEvent (Action.java:498)
at org.pentaho.di.ui.spoon.job.JobGraph$14.run (JobGraph.java:1901)
at org.pentaho.di.ui.spoon.job.JobGraph.loadReferencedObject (JobGraph.java:2524)
at org.pentaho.di.job.entries.job.JobEntryJob.loadReferencedObject (JobEntryJob.java:1734)
at org.pentaho.di.job.entries.job.JobEntryJob.getJobMeta (JobEntryJob.java:1409)
at org.pentaho.di.job.entries.job.JobEntryJob.getJobMetaFromRepository (JobEntryJob.java:1388)
我是Pentaho的新手，有人可以帮助我解决这些错误。