再会，
我正在尝试在我们的新 Jenkins 实例上设置 Multibranch 管道，但在Scan Multibranch Pipeline Log中遇到此错误：
没有这样的文件：E:\Continuous Integration\Jenkins\jobs\Enhanced-API\indexing\indexing.log
根据 jenkins.err.log，我遇到了一个
WARNING: Caught exception evaluating: h.filterDescriptors(it,attrs.descriptors) in /view/EAPI/job/Enhanced-API/configure. Reason: java.lang.NullPointerException: Descriptor list is null for context 'class org.jenkinsci.plugins.workflow.multibranch.WorkflowMultiBranchProject' in thread 'Handling GET /view/EAPI/job/Enhanced-API/configure from 10.117.100.110 : RequestHandlerThread[#35] AbstractFolder/configure.jelly FolderLibraries/DescriptorImpl/config.jelly LibraryConfiguration/config.jelly SCMRetriever/DescriptorImpl/config.jelly MultiSCM/DescriptorImpl/config.jelly'
java.lang.NullPointerException: Descriptor list is null for context 'class org.jenkinsci.plugins.workflow.multibranch.WorkflowMultiBranchProject' in thread 'Handling GET /view/EAPI/job/Enhanced-API/configure from 10.117.100.110 : RequestHandlerThread[#35] AbstractFolder/configure.jelly FolderLibraries/DescriptorImpl/config.jelly LibraryConfiguration/config.jelly SCMRetriever/DescriptorImpl/config.jelly MultiSCM/DescriptorImpl/config.jelly'
at hudson.model.DescriptorVisibilityFilter.apply(DescriptorVisibilityFilter.java:73)
at hudson.Functions.filterDescriptors(Functions.java:1863)
at sun.reflect.GeneratedMethodAccessor293.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.commons.jexl.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:258)
at org.apache.commons.jexl.parser.ASTMethod.execute(ASTMethod.java:104)
at org.apache.commons.jexl.parser.ASTReference.execute(ASTReference.java:83)
at org.apache.commons.jexl.parser.ASTReference.value(ASTReference.java:57)
at org.apache.commons.jexl.parser.ASTReferenceExpression.value(ASTReferenceExpression.java:51)
at org.apache.commons.jexl.ExpressionImpl.evaluate(ExpressionImpl.java:80)
at hudson.ExpressionFactory2$JexlExpression.evaluate(ExpressionFactory2.java:74)
at org.apache.commons.jelly.tags.core.CoreTagLibrary$3.run(CoreTagLibrary.java:134)
at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:95)
at org.kohsuke.stapler.jelly.ReallyStaticTagLibrary$1.run(ReallyStaticTagLibrary.java:99)
这个 Jenkins 的版本是2.85，带有以下版本的 Git 插件：
Git 客户端插件 - 2.5.0
Git 插件 - 3.6.0
GIT 服务器插件 - 1.7
GitHub API 插件 - 1.89
GitHub 分支源插件 - 2.2.3
GitHub 插件 - 1.28.0
关于我们为什么遇到这个问题的任何想法？谢谢！