com.google.common.util.concurrent.ExecutionError: java.lang.UnsupportedClassVersionError: org/glassfish/jersey/jackson/JacksonFeature : Unsupported major.minor version 51.0

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com.google.common.util.concurrent.ExecutionError: java.lang.UnsupportedClassVersionError: org/glassfish/jersey/jackson/JacksonFeature : Unsupported major.minor version 51.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at org.openstack4j.connectors.jersey2.ClientFactory.buildClientFromConfig(ClientFactory.java:57)
at org.openstack4j.connectors.jersey2.ClientFactory.access$100(ClientFactory.java:31)
at org.openstack4j.connectors.jersey2.ClientFactory$1.load(ClientFactory.java:39)
at com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3524)
at com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2317)
at com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2280)
at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2195)
at com.google.common.cache.LocalCache.get(LocalCache.java:3934)
at com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:3938)
at org.openstack4j.connectors.jersey2.ClientFactory.create(ClientFactory.java:50)
at org.openstack4j.connectors.jersey2.HttpCommand.initialize(HttpCommand.java:50)
at org.openstack4j.connectors.jersey2.HttpCommand.create(HttpCommand.java:45)
at org.openstack4j.connectors.jersey2.HttpExecutorServiceImpl.invoke(HttpExecutorServiceImpl.java:53)
at org.openstack4j.core.transport.internal.HttpExecutor.execute(HttpExecutor.java:51)
at org.openstack4j.openstack.internal.OSAuthenticator.authenticateV2(OSAuthenticator.java:77)
at org.openstack4j.openstack.internal.OSAuthenticator.invoke(OSAuthenticator.java:41)
at org.openstack4j.openstack.client.OSClientBuilder$ClientV2.authenticate(OSClientBuilder.java:84)
at com.osp4j.Osp4jApp.main(Osp4jApp.java:33)

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