Thanks a lot Jon, it work now.
If someone got the same prob, i've completely remove path redirect import (DB and code) and reinstall with latest stable version.
Migrate tool was already enable but in doubt, juste make : drush pm:enable migrate_tools after uninstall path redirect import
Actually doesn't work with latest stable version (2.0.9 for path redirect import and 6.0.4 for migrate tools)
I'm using php 8.1 and Drupal 10.1.8
I still have the error:
[error] Error: Class "Drupal\migrate_tools\Drush\Commands\MigrateToolsCommands" not found in include() (line 30 of /var/www/html/new-d10/web/modules/contrib/path_redirect_import/src/Drush/Commands/PathRedirectImportCommands.php) #0 /var/www/html/new-d10/vendor/composer/ClassLoader.php(576): include()
The path seems correct :
Migrate tools :
namespace Drupal\migrate_tools\Drush\Commands
Path redirect import :
use Drupal\migrate_tools\Drush\Commands\MigrateToolsCommands