Passcode XML error

[Omtech9119]

java.lang.NullPointerException: Set key using KeyBuilder first.   at com.kevalpatel.passcodeview.internal.BoxKeypad.measureView(BoxKeypad.java:155)   at com.kevalpatel.passcodeview.PinView.measureView(PinView.java:182)   at com.kevalpatel.passcodeview.internal.BasePasscodeView.onMeasure_Original(BasePasscodeView.java:212)   at com.kevalpatel.passcodeview.internal.BasePasscodeView.onMeasure(BasePasscodeView.java:-1)   at android.view.View.measure_Original(View.java:23169)   at android.view.View_Delegate.measure(View_Delegate.java:80)   at android.view.View.measure(View.java:23133)   at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:715)   at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:461)   at android.view.View.measure_Original(View.java:23169)   at android.view.View_Delegate.measure(View_Delegate.java:80)   at android.view.View.measure(View.java:23133)   at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6749)   at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)   at android.view.View.measure_Original(View.java:23169)   at android.view.View_Delegate.measure(View_Delegate.java:80)   at android.view.View.measure(View.java:23133)   at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:715)   at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:461)   at android.view.View.measure_Original(View.java:23169)   at android.view.View_Delegate.measure(View_Delegate.java:80)   at android.view.View.measure(View.java:23133) Copy stack to clipboard Tip: Try to refresh the layout.