SonarQuve Could not import unit test report for xUnit

Question

I have NET5 xUnit test project. On The build server in CI/CD pipeline I am generating the test coverage report and test execution report with below batch commands. I am using dotnet test to generate reports.

dotnet "C:\sonar-scanner-msbuild-5.5.3.43281-net5.0\SonarScanner.MSBuild.dll" begin /k:"IM" /d:sonar.host.url="myhost.com" /d:sonar.login="xxxxxxx" /d:sonar.cs.opencover.reportsPaths="%WORKSPACE%\Tests\**\TestResults\*\coverage.opencover.xml" /d:sonar.cs.xunit.reportsPaths="%WORKSPACE%\Tests\**\TestResults\TestOutput.xml"

dotnet build "%WORKSPACE%\IM.sln" -nr:false

dotnet test --no-build "%WORKSPACE%\Tests\MyProject1.UnitTests\MyProject.UnitTests.csproj" --logger:trx;LogFileName="%WORKSPACE%\Tests\MyProject1.UnitTests\TestResults\TestOutput.xml" --collect:"XPlat Code Coverage" -- DataCollectionRunSettings.DataCollectors.DataCollector.Configuration.Format=opencover

dotnet "C:\sonar-scanner-msbuild-5.5.3.43281-net5.0\SonarScanner.MSBuild.dll" end /d:sonar.login="xxxxxxx"

This creates two reports
...\TestResults\2417ade5-748d-4e44-8129-faa8d64f67b5\coverage.opencover.xml
and
...\TestResults\TestOutput.xml

The scanner was able to import coverage report into SonarQube server. However scanner is not able to import test execution report. It throws warning

INFO: Sensor C# Unit Test Results Import [csharp]
INFO: Parsing the XUnit Test Results file '...\TestResults\TestOutput.xml'.
WARN: Could not import unit test report '...\TestResults\TestOutput.xml'

I verified the TestOutput.xml file exists at the given location