when ever fetch data from database with specific field error is index out of bound

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Mobile

Android

Android4x

Hello!
When I fetch the data from data base error is occur named index out of bound.

Query written by me is as follow:

public Cursor getid(String nm2) {
   String qry = "SELECT  Family_member,Activity  FROM " + TABLE_NAME_FAMILY_DETAIL + " WHERE Family_member = '" + nm2 +"' " ;
		
   Cursor cur = db.rawQuery(qry1, null);

   return cur;
}

When I enter specific column names and try to fetch data from database so error occur but when I take all columns(e.g., SELECT * from....) then it will get output.so please reply me as soon as possible.

Hoping for your favorable reply.
Thank you.