java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.entitcs.office_attendance/com.entitcs.office_attendance.activities.My_Attendance_Report}: java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.View android.widget.ScrollView.getChildAt(int)' on a null object reference
	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3737)
	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:4022)
	at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:85)
	at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
	at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2336)
	at android.os.Handler.dispatchMessage(Handler.java:106)
	at android.os.Looper.loop(Looper.java:246)
	at android.app.ActivityThread.main(ActivityThread.java:8653)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:602)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1130)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.View android.widget.ScrollView.getChildAt(int)' on a null object reference
	at com.entitcs.office_attendance.activities.My_Attendance_Report.<init>(My_Attendance_Report.java:510)
	at java.lang.Class.newInstance(Native Method)
	at android.app.AppComponentFactory.instantiateActivity(AppComponentFactory.java:95)
	at androidx.core.app.CoreComponentFactory.instantiateActivity(CoreComponentFactory.java:45)
	at android.app.Instrumentation.newActivity(Instrumentation.java:1253)
	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3725)
	... 11 more