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via GitHub by blair1618
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Unable to start activity ComponentInfo{com.mapzen.erasermap/com.mapzen.erasermap.view.MainActivity}: java.lang.NullPointerException
java.lang.NullPointerException: 	at com.activeandroid.query.From.addArguments(From.java:160)	at com.activeandroid.query.From.where(From.java:100)	at com.winfox.drsmart.db.PatientVisitsDb.getVisitsByPatient(PatientVisitsDb.java:51)	at com.winfox.drsmart.fragments.PatientProfileFragment.initViews(PatientProfileFragment.java:206)	at com.winfox.drsmart.fragments.PatientProfileFragment.onCreateView(PatientProfileFragment.java:61)	at android.support.v4.app.Fragment.performCreateView(Fragment.java:2080)	at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1108)	at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1290)	at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1272)	at android.support.v4.app.FragmentManagerImpl.dispatchActivityCreated(FragmentManager.java:2149)	at android.support.v4.app.FragmentController.dispatchActivityCreated(FragmentController.java:201)	at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:600)	at android.support.v7.app.AppCompatActivity.onStart(AppCompatActivity.java:178)	at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1178)	at android.app.Activity.performStart(Activity.java:5057)	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2065)	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2117)	at android.app.ActivityThread.access$700(ActivityThread.java:134)	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1218)	at android.os.Handler.dispatchMessage(Handler.java:99)	at android.os.Looper.loop(Looper.java:137)	at android.app.ActivityThread.main(ActivityThread.java:4867)	at java.lang.reflect.Method.invokeNative(Native Method)	at java.lang.reflect.Method.invoke(Method.java:511)	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1007)	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:774)	at dalvik.system.NativeStart.main(Native Method)