java.lang.NullPointerException: Attempt to invoke virtual method 'long android.graphics.Paint.getNativeInstance()' on a null object reference

[TomGarden-2]

/*Device Info*/
[硬]设备制造商=Genymotion
[硬]设备型号=Custom
[硬]CPU型号=null
[硬]RAM=2.10 GB
[硬]ROM=13.38 GB
[OS][三方定制系统版本]=Android/vbox86p/vbox86p:8.0.0/OPR6.170623.017/32:userdebug/test-keys
[OS]产品名称(adb shell)=vbox86p
[OS][系统名称]=Android
[OS][Android版本]=8.0.0(26)
[app]versionName=1.0
[app]versionCode=1
/*Exception*/
java.lang.NullPointerException: Attempt to invoke virtual method 'long android.graphics.Paint.getNativeInstance()' on a null object reference
    at android.view.RecordingCanvas.drawRoundRect(RecordingCanvas.java:382)
    at com.farbox.androidbyeleven.View.Weight.TomBeaker.draw1(TomBeaker.java:217)
    at com.farbox.androidbyeleven.View.Weight.TomBeaker.onDraw(TomBeaker.java:201)
    at android.view.View.draw(View.java:19119)
    at android.view.View.updateDisplayListIfDirty(View.java:18069)
    at android.view.View.draw(View.java:18847)
    at android.view.ViewGroup.drawChild(ViewGroup.java:4214)
    at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4000)
    at android.view.View.updateDisplayListIfDirty(View.java:18060)
    at android.view.View.draw(View.java:18847)
    at android.view.ViewGroup.drawChild(ViewGroup.java:4214)
    at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4000)
    at android.view.View.draw(View.java:19122)
    at android.support.v4.view.ViewPager.draw(ViewPager.java:2420)
    at android.view.View.updateDisplayListIfDirty(View.java:18069)
    at android.view.View.draw(View.java:18847)
    at android.view.ViewGroup.drawChild(ViewGroup.java:4214)
    at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4000)
    at android.view.View.updateDisplayListIfDirty(View.java:18060)
    at android.view.View.draw(View.java:18847)
    at android.view.ViewGroup.drawChild(ViewGroup.java:4214)
    at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4000)
    at android.view.View.updateDisplayListIfDirty(View.java:18060)
    at android.view.View.draw(View.java:18847)
    at android.view.ViewGroup.drawChild(ViewGroup.java:4214)
    at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4000)
    at android.view.View.updateDisplayListIfDirty(View.java:18060)
    at android.view.View.draw(View.java:18847)
    at android.view.ViewGroup.drawChild(ViewGroup.java:4214)
    at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4000)
    at android.view.View.draw(View.java:19122)
    at com.android.internal.policy.DecorView.draw(DecorView.java:785)
    at android.view.View.updateDisplayListIfDirty(View.java:18069)
    at android.view.ThreadedRenderer.updateViewTreeDisplayList(ThreadedRenderer.java:643)
    at android.view.ThreadedRenderer.updateRootDisplayList(ThreadedRenderer.java:649)
    at android.view.ThreadedRenderer.draw(ThreadedRenderer.java:757)
    at android.view.ViewRootImpl.draw(ViewRootImpl.java:2980)
    at android.view.ViewRootImpl.performDraw(ViewRootImpl.java:2794)
    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2347)
    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1386)
    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6733)
    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:911)
    at android.view.Choreographer.doCallbacks(Choreographer.java:723)
    at android.view.Choreographer.doFrame(Choreographer.java:658)
    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:897)
    at android.os.Handler.handleCallback(Handler.java:789)
    at android.os.Handler.dispatchMessage(Handler.java:98)
    at android.os.Looper.loop(Looper.java:164)
    at android.app.ActivityThread.main(ActivityThread.java:6541)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)