How thinkphp5 conducts phpunit Unit Test

excuse me, thinkphp5.0 composer installs the unit test extension, and the error is as follows. I tried the google search solution to no avail, so I came to ask my friends to help me solve it.

Php
Mar.05,2021

the problem lies in your ThinkPHP version. The official version 5.0 extension library version numbers are both 1. 5 and 2. 0 versions are specific to the ThinkPHP5.1 version.
first update your ThinkPHP version, and then re-composer to install topthink/think-testing.

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