I attempted to analyze the reasons behind the failure of test cases, and my f...

I attempted to analyze the reasons behind the failure of test cases, and my findings indicate that the failure is associated with the Drupal\Tests\jsonapi\Kernel\TestCoverageTest::testEntityTypeRestTestCoverage test.

The issue lies in the expectation discrepancy, where the test is anticipating the presence of core/modules/jsonapi/tests/src/Functional/ActionTest.php → core/modules/system/tests/src/Functional/Jsonapi/ActionTest, instead of the actual path, which is core/modules/jsonapi/tests/src/Functional/ActionTest.php → core/modules/action/tests/src/Functional/Jsonapi/ActionTest.