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尝试构建 ExtJS 应用程序时出现一些构建错误（我的操作系统是 Windows 7）

app.framework.version=5.0.0.970

app.cmd.version=5.0.0.160

构建失败并出现异常：“com.sencha.exceptions.ExBuild”你能帮我解决这个问题吗？

[ERR] BUILD FAILED
[ERR] com.sencha.exceptions.ExBuild: Failed to compress input
[ERR]   at java.util.regex.Patte
[ERR] rn$GroupTail.match(Unknown Source)
[ERR]   at java
[ERR] .util.regex.Pattern$GroupHead.match(Unknown Source)
[ERR]   at java.util.regex.Pattern$BranchConn.match(Unknown Sourc
[ERR] e)
[ERR]   at java.util.regex.Pattern$Loop.match(Un
[ERR] known Source)
[ERR]   at java.util.regex.Patter
[ERR] n$Branch.match(Unknown Source)
[ERR]   at java.util.rege
[ERR] x.Pattern$BranchConn.match(Unknown Source)
[ERR]
[ERR]   at java.util.regex.Pattern$CharProperty.match(Unk
[ERR] nown Source)
[ERR]
[ERR] Total time: 21 seconds
[ERR] The following error occurred while executing this line:
D:\Users\admin\workspaceKepler\Propca\WebContent\.sencha\app\build-impl.xml:390: The following error occurred while executing this line:
D:\Users\admin\workspaceKepler\Propca\WebContent\.sencha\app\page-impl.xml:202: com.sencha.exceptions.ExBuild: Failed to compress input

Build-impl.xml 的相关行如下

    <!--
    ===============================================================
    Page
    uses targets from page-impl.xml to generate the output markup
    file and associated microloader / app manifest
    ===============================================================
    -->
386:    <import file="${basedir}/.sencha/app/page-impl.xml"/>
387:    <target name="page" 
388:            depends="init" 
389:            description="Builds the application's HTML page.">
390:        <x-ant-call unless="skip.page">
391:            <target name="-before-page"/>
392:            <target name="-page"/>
393:            <target name="-after-page"/>
394:        </x-ant-call>
395:    </target>

相关的 page-impl.xml 行如下

201:    <target name="-copy-app-resources" depends="-init-compiler">
202:        <x-compile refid="${compiler.ref.id}">
203:            <![CDATA[
204:            app-resources
205:                -compress=${enable.resource.compression}
206:                -out=${build.dir}
207:            ]]>
208:        </x-compile>
209:    </target>

我找到了一些发生错误的原因。你能解释一下这个堆栈跟踪吗？

...
Caused by: com.sencha.exceptions.ExReflect: java.lang.reflect.InvocationTargetException
    at com.sencha.util.ReflectionUtil.invoke(ReflectionUtil.java:148)
    at com.sencha.tools.compressors.yui.YuiCssCompressor.runYuiCompressor(YuiCssCompressor.java:58)
    ... 48 more
Caused by: java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at com.sencha.util.ReflectionUtil.invoke(ReflectionUtil.java:145)
    ... 49 more
Caused by: java.lang.StackOverflowError
    at java.util.regex.Pattern$GroupTail.match(Unknown Source)
    at java.util.regex.Pattern$BranchConn.match(Unknown Source)  
...
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