java.lang.ArrayIndexOutOfBoundsException: length=10; index=-1
	at java.util.ArrayList.remove(ArrayList.java:506)
	at com.entitcs.office_attendance.sales.Add_Quotation$k$c$a.onClick(Unknown Source:31)
	at androidx.appcompat.app.AlertController$g.handleMessage(Unknown Source:37)
	at android.os.Handler.dispatchMessage(Handler.java:106)
	at android.os.Looper.loop(Looper.java:233)
	at android.app.ActivityThread.main(ActivityThread.java:7225)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:499)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:962)