CakePHP4 Cannot Generate Code Coverage

Create a controller test with CakePHP4 and
I tried to generate code coverage, but I couldn't.

Refer to the article below and

Cookbook > Test > Generate Code Coverage
https://book.cakephp.org/4/ja/development/testing.html#id9

As described in this article, I executed the following command:

phpunit --coverage-html webroot/coverage tests/TestCase/Controller/〇 Con ControllerTest.php

The following error occurs and no code coverage is generated:

Cannot open file "tests/TestCase/Controller/〇 Con ControllerTest.php".

If you ls the controller you are testing, it will appear as follows:

If you know the cause and how to deal with it, I would appreciate it if you could let me know.

I look forward to your kind cooperation.

<Each version>
PHP 8.0.12
CakePHP 4.2.10
PHPUnit 3.7.21

*We are also asking the same question on teratail: .