java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException: 	at java.io.File.(File.java:222)	at weblogic.management.utils.PDevHelper.getUpgradeLaunchLocation(PDevHelper.java:79)	at weblogic.management.utils.PDevHelper.getPDevClassLoader(PDevHelper.java:38)	at weblogic.management.internal.CIEDomainGenerator.validateConfigFramework(CIEDomainGenerator.java:18)	at weblogic.server.embed.internal.FullEmbeddedServerProvider.lookupDomainGenerator(FullEmbeddedServerProvider.java:87)	at weblogic.server.embed.internal.EmbeddedServerProvider.createDefaultDomain(EmbeddedServerProvider.java:138)	at weblogic.server.embed.internal.DomainConfig.createConfig(DomainConfig.java:233)