无法在控制台得到输出的结果，求助，有 Error，好像是什么空指针的问题

Unhandled event loop exception

java.lang.NullPointerException

at com.android.ddmuilib.logcat.LogCatPanel.updateUnreadCount(LogCatPanel.java:1212)

at com.android.ddmuilib.logcat.LogCatPanel.bufferChanged(LogCatPanel.java:1168)

at com.android.ddmuilib.logcat.LogCatPanel.reloadLogBuffer(LogCatPanel.java:1196)

at com.android.ddmuilib.logcat.LogCatPanel.updateAppliedFilters(LogCatPanel.java:1136)

at com.android.ddmuilib.logcat.LogCatPanel.filterSelectionChanged(LogCatPanel.java:1117)

at com.android.ddmuilib.logcat.LogCatPanel.access$1400(LogCatPanel.java:98)

at com.android.ddmuilib.logcat.LogCatPanel$6.widgetSelected(LogCatPanel.java:623)

at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:248)

at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)

at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1057)

at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4170)

at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3759)

at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1113)

at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)

at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:997)

at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:138)

at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:610)

at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)

at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:567)

at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)

at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)

at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)

at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)

at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)

at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:354)

at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:181)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:636)

at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591)

at org.eclipse.equinox.launcher.Main.run(Main.java:1450)