Exception when making any change to Jenkins multibranch pipeline configuration-CodePudding

The

Caught unhandled exception with ID 408ae4bf-39cd-4d36-b90b-66265c44bb65 java.lang.ClassNotFoundException: ["com.cloudbees.hudson.plugins.folder.icons.StockFolderIcon","jenkins.branch.MetadataActionFolderIcon"] at hudson.PluginManager$UberClassLoader.findClass(PluginManager.java:2173) at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at org.kohsuke.stapler.RequestImpl$TypePair.convertJSON(RequestImpl.java:681) Caused: java.lang.IllegalArgumentException: Class ["com.cloudbees.hudson.plugins.folder.icons.StockFolderIcon","jenkins.branch.MetadataActionFolderIcon"] is specified in JSON, but no such class found in classLoader hudson.PluginManager$UberClassLoader at org.kohsuke.stapler.RequestImpl$TypePair.convertJSON(RequestImpl.java:686) Caused: java.lang.IllegalArgumentException: Failed to instantiate class com.cloudbees.hudson.plugins.folder.FolderIcon from {"stapler-class":["com.cloudbees.hudson.plugins.folder.icons.StockFolderIcon","jenkins.branch.MetadataActionFolderIcon"],"$class":["com.cloudbees.hudson.plugins.folder.icons.StockFolderIcon","jenkins.branch.MetadataActionFolderIcon"]} at org.kohsuke.stapler.RequestImpl$TypePair.convertJSON(RequestImpl.java:693) at org.kohsuke.stapler.RequestImpl.bindJSON(RequestImpl.java:490) at org.kohsuke.stapler.RequestImpl.bindJSON(RequestImpl.java:486) at com.cloudbees.hudson.plugins.folder.AbstractFolder.doConfigSubmit(AbstractFolder.java:1360) at com.cloudbees.hudson.plugins.folder.computed.ComputedFolder.doConfigSubmit(ComputedFolder.java:414) at java.lang.invoke.MethodHandle.invokeWithArguments(Unknown Source) at org.kohsuke.stapler.Function$MethodFunction.invoke(Function.java:393) at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:405) at org.kohsuke.stapler.interceptor.RequirePOST$Processor.invoke(RequirePOST.java:77) at org.kohsuke.stapler.PreInvokeInterceptedFunction.invoke(PreInvokeInterceptedFunction.java:26) at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:208) at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:141) at org.kohsuke.stapler.MetaClass$11.doDispatch(MetaClass.java:536) at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:58) at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:766) Caused: javax.servlet.ServletException at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:816) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:898) at org.kohsuke.stapler.MetaClass$4.doDispatch(MetaClass.java:281) at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:58) at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:766) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:898) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:694) at org.kohsuke.stapler.Stapler.service(Stapler.java:240) at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)

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CodePudding user response：

I had a similar experience with my Jenkins instance on Jenkins 2.303.2. Solved this by going to Dashboard -> Manage Jenkins -> Manage Plugins and updating the Folders plugin to the newest version. After the plugin update the errors went away and I was able to save the multibranch pipeline options