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java.lang.NoClassDefFoundError: jenkins/scm/api/SCMNavigator at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:760) at jenkins.util.AntClassLoader.defineClassFromData(AntClassLoader.java:1139) at hudson.ClassicPluginStrategy$AntClassLoader2.defineClassFromData(ClassicPluginStrategy.java:878) at jenkins.util.AntClassLoader.getClassFromStream(AntClassLoader.java:1310) at jenkins.util.AntClassLoader.findClassInComponents(AntClassLoader.java:1366) at jenkins.util.AntClassLoader.findClass(AntClassLoader.java:1326) at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at jenkins.ClassLoaderReflectionToolkit.invoke(ClassLoaderReflectionToolkit.java:44) at jenkins.ClassLoaderReflectionToolkit._findClass(ClassLoaderReflectionToolkit.java:81) at hudson.ClassicPluginStrategy$DependencyClassLoader.findClass(ClassicPluginStrategy.java:758) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at jenkins.util.AntClassLoader.findBaseClass(AntClassLoader.java:1398) at jenkins.util.AntClassLoader.loadClass(AntClassLoader.java:1075) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at java.lang.Class.getDeclaredMethods0(Native Method) at java.lang.Class.privateGetDeclaredMethods(Class.java:2701) at java.lang.Class.privateGetPublicMethods(Class.java:2902) at java.lang.Class.getMethods(Class.java:1615) at hudson.ExtensionFinder$GuiceFinder$SezpozModule.resolve(ExtensionFinder.java:477) at hudson.ExtensionFinder$GuiceFinder$SezpozModule.configure(ExtensionFinder.java:506) at com.google.inject.AbstractModule.configure(AbstractModule.java:62) at com.google.inject.spi.Elements$RecordingBinder.install(Elements.java:230) at com.google.inject.spi.Elements.getElements(Elements.java:103) at com.google.inject.internal.InjectorShell$Builder.build(InjectorShell.java:136) at com.google.inject.internal.InternalInjectorCreator.build(InternalInjectorCreator.java:104) at com.google.inject.internal.InjectorImpl.createChildInjector(InjectorImpl.java:230) at hudson.ExtensionFinder$GuiceFinder.refresh(ExtensionFinder.java:334) at jenkins.model.Jenkins.refreshExtensions(Jenkins.java:2394) at hudson.PluginManager.dynamicLoad(PluginManager.java:827) at hudson.PluginManager.dynamicLoad(PluginManager.java:775) at hudson.model.UpdateCenter$InstallationJob._run(UpdateCenter.java:1863) at hudson.model.UpdateCenter$DownloadJob.run(UpdateCenter.java:1624) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at hudson.remoting.AtmostOneThreadExecutor$Worker.run(AtmostOneThreadExecutor.java:110) at java.lang.Thread.run(Thread.java:745)Caused by: java.lang.ClassNotFoundException: jenkins.scm.api.SCMNavigator at jenkins.util.AntClassLoader.findClassInComponents(AntClassLoader.java:1376) at jenkins.util.AntClassLoader.findClass(AntClassLoader.java:1326) at jenkins.util.AntClassLoader.loadClass(AntClassLoader.java:1079) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 40 more