我正在使用带有Model和Greeting语法的vanilla new Xtext项目。我添加了一个新的Xcore项目以及此博客文章（https://blogs.itemis.com/en/using-xtext-with-xcore-and-gradle）。我也在使用Gradle设置，如DSL项目中没有Manifest。
我已经通过build.gradle文件添加了对Xcore模型的引用，并使用了mwe2文件中的“referencedResource”。但是，尝试构建工作流程（mwe2），我得到：
sing resourceSet registry. The registered Packages will not be registered in the global EPackage.Registry.INSTANCE!
657 [main] ERROR textGeneratorResourceSetInitializer - Couldn't initialize Xcore support. Is it on the classpath?
659 [main] ERROR textGeneratorResourceSetInitializer - Could not load XcoreLang.xcore.
org.eclipse.emf.ecore.resource.impl.ResourceSetImpl$1DiagnosticWrappedException: java.io.IOException: The path '/org.eclipse.emf.ecore.xcore.lib/model/XcoreLang.xcore' is unmapped
<snip/>
667 [main] ERROR mf.mwe2.launch.runtime.Mwe2Launcher - Problems running workflow org.xtext.example.mydsl.GenerateMyDsl: org.xml.sax.SAXParseExceptionpublicId: platform:/resource/org.xtext.example.mydsl.model/src/mydsl.xcore; systemId: platform:/resource/org.xtext.example.mydsl.model/src/mydsl.xcore; lineNumber: 1; columnNumber: 1; Content is not allowed in prolog.
java.lang.RuntimeException: Problems running workflow org.xtext.example.mydsl.GenerateMyDsl: org.xml.sax.SAXParseExceptionpublicId: platform:/resource/org.xtext.example.mydsl.model/src/mydsl.xcore; systemId: platform:/resource/org.xtext.example.mydsl.model/src/mydsl.xcore; lineNumber: 1; columnNumber: 1; Content is not allowed in prolog.
如果我在语法（xtext文件）中点击F3，它会找到相应的Xcore定义，所以我无法弄清楚引用在哪里出错了。如何修复此路径未映射的异常？