Richard Besson

I have the same error too! Drush 8.4.11 / Drupal 7.91 on PHP 7.4. The debug say : ``` Verifying signature for svn version control engine. [6.51 sec, 30.89 Mo]...

My server manager say it's possible that Drupal was installed or updated manually and it's possibly the reason of this bug. I will try to uninstall Drupal manually and reinstall...

I have tested many versions of Drush and the problem stay the same. I'm obliged to work with a local version of Drush because I have other websites in Drupal...