Could not use "DrupalTestsListenersHtmlOutputPrinter" as printer: class does not exist

[brentgees]

When trying to execute the first test from https://github.com/finnef/lando-drupal8-test-debugging#run, I get the following error:

Could not use "DrupalTestsListenersHtmlOutputPrinter" as printer: class does not exist

This did not allow me to execute any tests, I was able to fix this on my local machine by removing '--printer=\Drupal\Tests\Listeners\HtmlOutputPrinter' in the .lando.yml file.

I don't know if this is the best solution, but it helped me to execute all the tests without errors.

[finnef]

This was an config error where the slashes removed in the path \Drupal\Tests\Listeners\HtmlOutputPrinter
This was fixed in the 1.2 release