java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at android.content.ComponentName.(ComponentName.java:78)
at android.content.Intent.(Intent.java:4180)
at com.kd7uiy.hamfinder.al.onItemClick(Unknown Source)
at android.widget.AdapterView.performItemClick(AdapterView.java:308)
at android.widget.AbsListView.performItemClick(AbsListView.java:1478)
at android.widget.AbsListView$PerformClick.run(AbsListView.java:3480)
at android.widget.AbsListView$3.run(AbsListView.java:4823)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:157)
at android.app.ActivityThread.main(ActivityThread.java:5356)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1265)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1081)

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