the backend test run successfully at the latest version which is 27.3.1, but because the react script needs it to be 26.6.0, I reinstall it at this version, but the test is now failed to run.


the backend test run successfully at the latest version which is 27.3.1, but because the react script needs it to be 26.6.0, I reinstall it at this version, but the test is now failed to run.

