Flutter: Ant : You must not specify nested elements when using refid - flutter

Question

On my flutter project by using junitreport I am making junit report but it is XML,
flutter test --machine | tojunit --output test.xml
Now by Ant, I want to make Html from it. test.xml is at the root of my project, here I made build.xml:
<project name="genTestReport" default="gen" basedir=".">
<description>
Generate the HTML report from JUnit XML files
</description>
<path id="classpath">
<pathelement location="/opt/homebrew/opt/ant/1.10.12/junit/junit-4.13.2.jar"/>
</path>
<target name="gen">
<property name="genReportDir" location="${basedir}/unitTestReports"/>
<delete dir="${genReportDir}"/>
<mkdir dir="${genReportDir}"/>
<junit printsummary="true" showoutput="true" fork="true">
<classpath refid="classpath">
<fileset dir="${basedir}">
<include name="test.xml"/>
</fileset>
</classpath>
<formatter type="xml"/>
</junit>
<junitreport todir="${basedir}/unitTestReports">
<fileset dir="${basedir}" includes="test.xml"/>
<report format="frames" todir="${genReportDir}/html"/>
</junitreport>
</target>
</project>
Now I run this command in root folder:
alt#Alis-MBP rr-front % ant -buildfile build.xml
Buildfile: /Users/alt/Projects/rr-front/build.xml
gen:
[delete] Deleting directory /Users/alt/Projects/rr-front/unitTestReports
[mkdir] Created dir: /Users/alt/Projects/rr-front/unitTestReports
BUILD FAILED
/Users/alt/Projects/RentReady/rr-portal-front/build.xml:13: You must not specify nested elements when using refid
Does it seem I need some configuration ?

Answer 1

The <junit> task is just for running the tests, which you already did outside Ant. So I think you only need the <junitreport> task in this case to convert the xml to html.
The reason for the error is that you put the fileset inside the classpath in the junit task:
<classpath refid="classpath">
<fileset dir="${basedir}">
<include name="test.xml"/>
</fileset>
</classpath>
When you use a refid, as you have in the classpath, you are saying "use this reference to define the classpath". Hence, if you use a refid and define the classpath with nested elements, there is a conflict.