Krch error android studio

Process: uz.inware.xnv.myapplication, PID: 17238
    java.lang.NullPointerException: Attempt to invoke virtual method 'android.text.Editable android.widget.EditText.getText()' on a null object reference
        at uz.inware.xnv.myapplication.MainActivity.onClick(MainActivity.java:29)
        at android.view.View.performClick(View.java:6314)
        at android.view.View$PerformClick.run(View.java:24793)
        at android.os.Handler.handleCallback(Handler.java:790)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:164)
        at android.app.ActivityThread.main(ActivityThread.java:6543)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:440)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:810)

У меня такая ошибка