新的grails 3 intellij项目“prolog中不允许内容”

Question

一个全新的，空的grails 3.2.8项目。Intellij做了gradle的事情，并提出了一个错误“prolog中不允许内容”。怎么一回事？什么内容，什么prolog？Gradle选项卡下没有任何内容，项目中有grails-app结构，但Tools选项卡下没有Grails。怎么一回事？为什么Intellij不能构建一个空项目？我该如何解决这个问题呢？

Update -通过运行cmd "grailsw --stacktrace compile“我看到了以下内容，这是否提供了线索？(只显示堆栈跟踪的开始部分)。

Error initializing classpath: Content is not allowed in prolog. (NOTE: Stack trace has been filtered. Use --verbose to see entire trace.)
org.xml.sax.SAXParseException; systemId: file:/C:/Users/Jay/.gradle/caches/modul
es-2/files-2.1/org.springframework/spring-core/4.3.7.RELEASE/7beb5752c6d33f3d112
6fba306d0554c24b735d7/spring-core-4.3.7.RELEASE.pom; lineNumber: 2; columnNumber
: 1; Content is not allowed in prolog.
        at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.
java:257)
        at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(Doc
umentBuilderImpl.java:339)
        at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.parser.PomRea
der.parseToDom(PomReader.java:249)
        at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.parser.PomRea
der.access$100(PomReader.java:59)
        at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.parser.PomRea
der$2.transform(PomReader.java:137)
        at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.parser.PomRea
der$2.transform(PomReader.java:134)
        at org.gradle.internal.resource.AbstractExternalResource.withContent(Abs
tractExternalResource.java:96)