[تنبيه - عنوان غير مناسب : ]مساعده الله يخليكم

ما سبب هذة الرساله وما هى المشكله وحلها الله يخليكم

Exception in thread "main" java.lang.ExceptionInInitializerError

Caused by: java.lang.NullPointerException

at com.bowman.cardserv.crypto.DESUtil.bytesToString(Unknown Source)

at com.bowman.cardserv.session.SessionRepair.normalend(Unknown Source)

at com.bowman.cardserv.GlobalConstants.getver(Unknown Source)

at com.bowman.cardserv.CardServProxy.<clinit>(Unknown Source)