java.lang.NumberFormatException: null

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java.lang.NumberFormatException: null
at java.lang.Integer.parseInt(
at java.lang.Byte.parseByte(
at java.lang.Byte.parseByte(
at com.primavera.exponline.common.base.CommonUtilities.init(Unknown Source)
at com.primavera.exponline.servlet.StartupServlet.init(Unknown Source)
at weblogic.servlet.internal.StubSecurityHelper.createServlet(
at weblogic.servlet.internal.StubLifecycleHelper.createOneInstance(

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