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java.lang.NullPointerException: 	at org.pentaho.di.core.row.ValueDataUtil.leftTrim(ValueDataUtil.java:27)	at org.pentaho.di.core.row.ValueMeta.trim(ValueMeta.java:1299)	at org.pentaho.di.core.row.ValueMeta.getString(ValueMeta.java:1205)	at org.pentaho.di.core.row.ValueMeta.convertData(ValueMeta.java:2958)	at org.pentaho.di.core.row.ValueMeta.convertBinaryStringToNativeType(ValueMeta.java:1065)	at org.pentaho.di.core.row.ValueMeta.getString(ValueMeta.java:1201)	at org.pentaho.di.ui.core.dialog.PreviewRowsDialog$6.run(PreviewRowsDialog.java:276)	at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)	at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:123)	at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3214)	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2958)	at org.pentaho.di.ui.core.dialog.PreviewRowsDialog.open(PreviewRowsDialog.java:229)	at org.pentaho.di.ui.trans.steps.csvinput.CsvInputDialog.preview(CsvInputDialog.java:630)	at org.pentaho.di.ui.trans.steps.csvinput.CsvInputDialog.access$300(CsvInputDialog.java:74)	at org.pentaho.di.ui.trans.steps.csvinput.CsvInputDialog$5.handleEvent(CsvInputDialog.java:334)	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1495)	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1519)	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1504)	at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1295)	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3350)	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2954)	at org.pentaho.di.ui.spoon.Spoon.readAndDispatch(Spoon.java:873)	at org.pentaho.di.ui.spoon.Spoon.start(Spoon.java:5626)	at org.pentaho.di.ui.spoon.Spoon.run(Spoon.java:5722)	at org.pentaho.di.ui.spoon.Spoon.main(Spoon.java:371)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:585)	at apple.launcher.LaunchRunner.run(LaunchRunner.java:88)	at apple.launcher.LaunchRunner.callMain(LaunchRunner.java:50)	at apple.launcher.JavaApplicationLauncher.launch(JavaApplicationLauncher.java:52)