Error Code 5 with Speech recognizer.....on API 28

[ranaprathap2]

2019-06-23 21:48:10.640 17730-17730/com.example.servicetap E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.servicetap, PID: 17730
java.lang.NullPointerException: Attempt to invoke virtual method 'java.util.Iterator java.util.ArrayList.iterator()' on a null object reference
at com.michaelgarnerdev.materialsearchview.MaterialSearchView.onError(MaterialSearchView.java:1753)
at android.speech.SpeechRecognizer$InternalListener$1.handleMessage(SpeechRecognizer.java:451)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6863)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:537)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)