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java.lang.IllegalStateException: zip file closed	at java.util.zip.ZipFile.ensureOpen(ZipFile.java:415)	at java.util.zip.ZipFile.getEntry(ZipFile.java:160)	at java.util.jar.JarFile.getEntry(JarFile.java:208)	at java.util.jar.JarFile.getJarEntry(JarFile.java:191)	at sun.misc.URLClassPath$JarLoader.getResource(URLClassPath.java:757)	at sun.misc.URLClassPath.getResource(URLClassPath.java:169)	at java.net.URLClassLoader$1.run(URLClassLoader.java:194)	at java.security.AccessController.doPrivileged(Native Method)	at java.net.URLClassLoader.findClass(URLClassLoader.java:190)	at org.apache.openejb.util.classloader.URLClassLoaderFirst.loadInternal(URLClassLoaderFirst.java:177)	at org.apache.openejb.util.classloader.URLClassLoaderFirst.loadClass(URLClassLoaderFirst.java:127)	at java.lang.ClassLoader.loadClass(ClassLoader.java:247)