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lang.NullPointerException: 	at butterknife.ButterKnife.findById(ButterKnife.java:343)	at com.omitted.LogFragment.reset(LogFragment.java:156)	at com.omitted.LogPresenter.reset(LogPresenter.java:35)	at com.omitted.CalculatorModel.doReset(CalculatorModel.java:251)	at com.omitted.CalculatorPresenter.onResetClicked(CalculatorPresenter.java:107)	at com.omitted.CalculatorFragment.reset(CalculatorFragment.java:130)	at com.omitted.CalculatorFragment.onCreateView(CalculatorFragment.java:97)	at android.support.v4.app.Fragment.performCreateView(Fragment.java:1974)	at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1067)	at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1252)	at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:742)	at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1617)	at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:570)	at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:141)	at android.support.v4.view.ViewPager.populate(ViewPager.java:1177)	at android.support.v4.view.ViewPager.populate(ViewPager.java:1025)	at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1545)	at android.view.View.measure(View.java:16497)	at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)	at android.support.design.widget.CoordinatorLayout.onMeasureChild(CoordinatorLayout.java:668)	at android.support.design.widget.CoordinatorLayout.onMeasure(CoordinatorLayout.java:735)	at android.view.View.measure(View.java:16497)	at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)	at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)	at android.support.v7.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:135)	at android.view.View.measure(View.java:16497)	at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)	at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404)	at android.widget.LinearLayout.measureVertical(LinearLayout.java:695)	at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)	at android.view.View.measure(View.java:16497)	at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)	at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)	at android.view.View.measure(View.java:16497)	at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)	at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404)	at android.widget.LinearLayout.measureVertical(LinearLayout.java:695)	at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)	at android.view.View.measure(View.java:16497)	at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5125)	at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)	at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2291)	at android.view.View.measure(View.java:16497)	at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1916)	at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1113)	at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1295)	at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1000)	at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5670)	at android.view.Choreographer$CallbackRecord.run(Choreographer.java:761)	at android.view.Choreographer.doCallbacks(Choreographer.java:574)	at android.view.Choreographer.doFrame(Choreographer.java:544)	at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:747)	at android.os.Handler.handleCallback(Handler.java:733)	at android.os.Handler.dispatchMessage(Handler.java:95)	at android.os.Looper.loop(Looper.java:136)