$ rm -fr vendor; php composer.phar clearcache
Cache directory does not exist (cache-vcs-dir):
Clearing cache (cache-repo-dir): C:\Users\stronk7\AppData\Local\Composer\repo
Clearing cache (cache-files-dir): C:\Users\stronk7\AppData\Local\Composer\files
Clearing cache (cache-dir): C:\Users\stronk7\AppData\Local\Composer
All caches cleared.

stronk7@stronk7lenovo MINGW64 ~/git_moodle/integration (master)
$ php admin/tool/behat/cli/init.php
You are already using composer version 2.0.8 (stable channel).
Installing dependencies from lock file (including require-dev)
Verifying lock file contents can be installed on current platform.
Package operations: 72 installs, 0 updates, 0 removals
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  - Installing phpunit/php-file-iterator (2.0.3): Extracting archive
  - Installing theseer/tokenizer (1.2.0): Extracting archive
  - Installing sebastian/code-unit-reverse-lookup (1.0.2): Extracting archive
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  - Installing doctrine/instantiator (1.4.0): Extracting archive
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Package container-interop/container-interop is abandoned, you should avoid using it. Use psr/container instead.
Package phpunit/php-token-stream is abandoned, you should avoid using it. No replacement was suggested.
Generating autoload files
43 packages you are using are looking for funding.
Use the `composer fund` command to find out more!

In Selenium2Factory.php line 54:

  Install MinkSelenium2Driver in order to use selenium2 driver.


Error: Error running behat CLI command. Try running "vendor\bin\behat --help" manually from CLI to find out more about the problem.

Ensure you set $CFG->behat_* vars in config.php and you ran admin/tool/behat/cli/init.php.
More info in https://docs.moodle.org/dev/Running_acceptance_test