Unhandled exception in the UI thread.

[pythons]

GAPID Version: 1.6.1:338bb67b0fe291f56f31d69f11ea1a45ed7cfeb6
OS: mac os x x86_64

Please provide detailed steps that led to the error and copy-paste the stack trace.
Extra details from the logs and the trace file would be extra helpful.

java.lang.NullPointerException
at com.google.gapid.views.AboutDialog.showLogDir(AboutDialog.java:66)
at com.google.gapid.views.ErrorDialog$1.lambda$createDetails$3(ErrorDialog.java:143)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4292)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1512)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1535)
at org.eclipse.swt.widgets.Widget.sendSelectionEvent(Widget.java:1585)
at org.eclipse.swt.widgets.Link.textView_clickOnLink_atIndex(Link.java:799)
at org.eclipse.swt.widgets.Display.windowProc(Display.java:6508)
at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method)
at org.eclipse.swt.widgets.Widget.callSuper(Widget.java:235)
at org.eclipse.swt.widgets.Widget.mouseDownSuper(Widget.java:1146)
at org.eclipse.swt.widgets.Widget.mouseDown(Widget.java:1138)
at org.eclipse.swt.widgets.Control.mouseDown(Control.java:2620)
at org.eclipse.swt.widgets.Display.windowProc(Display.java:5962)
at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method)
at org.eclipse.swt.widgets.Widget.callSuper(Widget.java:235)
at org.eclipse.swt.widgets.Widget.windowSendEvent(Widget.java:2158)
at org.eclipse.swt.widgets.Shell.windowSendEvent(Shell.java:2414)
at org.eclipse.swt.widgets.Display.windowProc(Display.java:6086)
at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method)
at org.eclipse.swt.widgets.Display.applicationSendEvent(Display.java:5325)
at org.eclipse.swt.widgets.Display.applicationProc(Display.java:5477)
at org.eclipse.swt.internal.cocoa.OS.objc_msgSend(Native Method)
at org.eclipse.swt.internal.cocoa.NSApplication.sendEvent(NSApplication.java:131)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3730)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:821)
at org.eclipse.jface.window.Window.open(Window.java:797)
at com.google.gapid.views.ErrorDialog.showErrorDialog(ErrorDialog.java:161)
at com.google.gapid.Main$UI.lambda$onServerExit$4(Main.java:172)
at com.google.gapid.Main$UI.lambda$scheduleIfStillOpen$5(Main.java:182)
at com.google.gapid.widgets.Widgets.ifNotDisposed(Widgets.java:124)
at com.google.gapid.widgets.Widgets.lambda$scheduleIfNotDisposed$1(Widgets.java:152)
at com.google.gapid.widgets.Widgets.lambda$schedule$0(Widgets.java:144)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:40)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:185)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4068)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3735)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:821)
at org.eclipse.jface.window.Window.open(Window.java:797)
at com.google.gapid.views.ErrorDialog.showErrorDialog(ErrorDialog.java:161)
at com.google.gapid.Main$UI.lambda$onServerExit$4(Main.java:172)
at com.google.gapid.Main$UI.lambda$scheduleIfStillOpen$5(Main.java:182)
at com.google.gapid.widgets.Widgets.ifNotDisposed(Widgets.java:124)
at com.google.gapid.widgets.Widgets.lambda$scheduleIfNotDisposed$1(Widgets.java:152)
at com.google.gapid.widgets.Widgets.lambda$schedule$0(Widgets.java:144)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:40)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:185)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4068)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3735)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:821)
at org.eclipse.jface.window.Window.open(Window.java:797)
at com.google.gapid.Main$UI.show(Main.java:119)
at com.google.gapid.Main.main(Main.java:68)