java.lang.IllegalStateException: Could not execute method for android:onClick
	at androidx.appcompat.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:414)
	at android.view.View.performClick(View.java:4783)
	at android.view.View$PerformClick.run(View.java:19887)
	at android.os.Handler.handleCallback(Handler.java:739)
	at android.os.Handler.dispatchMessage(Handler.java:95)
	at android.os.Looper.loop(Looper.java:135)
	at android.app.ActivityThread.main(ActivityThread.java:5290)
	at java.lang.reflect.Method.invoke(Native Method)
	at java.lang.reflect.Method.invoke(Method.java:372)
	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:911)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:706)
Caused by: java.lang.reflect.InvocationTargetException
	at java.lang.reflect.Method.invoke(Native Method)
	at java.lang.reflect.Method.invoke(Method.java:372)
	at androidx.appcompat.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:409)
	... 10 more
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.net.Uri.getScheme()' on a null object reference
	at android.content.ContentResolver.openInputStream(ContentResolver.java:646)
	at com.entitcs.office_attendance.activities.register_complain_activity.submitComplain(register_complain_activity.java:344)
	at com.entitcs.office_attendance.activities.register_complain_activity.submitComplain(register_complain_activity.java:521)
	... 13 more