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java.lang.SecurityException: sealing violation	at java.net.URLClassLoader.defineClass(URLClassLoader.java:229)	at java.net.URLClassLoader.access$100(URLClassLoader.java:51)	at java.net.URLClassLoader$1.run(URLClassLoader.java:190)	at java.security.AccessController.doPrivileged(Native Method)	at java.net.URLClassLoader.findClass(URLClassLoader.java:183)	at java.lang.ClassLoader.loadClass(ClassLoader.java:294)	at java.lang.ClassLoader.loadClass(ClassLoader.java:250)	at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:310)	at java.lang.ClassLoader.defineClass0(Native Method)	at java.lang.ClassLoader.defineClass(ClassLoader.java:488)	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:106)	at java.net.URLClassLoader.defineClass(URLClassLoader.java:243)	at java.net.URLClassLoader.access$100(URLClassLoader.java:51)	at java.net.URLClassLoader$1.run(URLClassLoader.java:190)	at java.security.AccessController.doPrivileged(Native Method)	at java.net.URLClassLoader.findClass(URLClassLoader.java:183)	at java.lang.ClassLoader.loadClass(ClassLoader.java:294)	at java.lang.ClassLoader.loadClass(ClassLoader.java:287)	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:281)	at java.lang.ClassLoader.loadClass(ClassLoader.java:250)	at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:310)	at java.lang.ClassLoader.defineClass0(Native Method)	at java.lang.ClassLoader.defineClass(ClassLoader.java:488)	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:106)	at java.net.URLClassLoader.defineClass(URLClassLoader.java:243)	at java.net.URLClassLoader.access$100(URLClassLoader.java:51)	at java.net.URLClassLoader$1.run(URLClassLoader.java:190)	at java.security.AccessController.doPrivileged(Native Method)	at java.net.URLClassLoader.findClass(URLClassLoader.java:183)	at java.lang.ClassLoader.loadClass(ClassLoader.java:294)	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:281)	at java.lang.ClassLoader.loadClass(ClassLoader.java:250)	at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:310)	at weblogic.t3.srvr.T3Srvr.checkAccess(T3Srvr.java:290)	at weblogic.t3.srvr.T3Srvr.initialize(T3Srvr.java:347)	at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:206)	at weblogic.Server.main(Server.java:35)