Problem: run, then error occurred composer require drush/drush: Solution: run composer with the following pattern instead: php -d memory_limit=-1 /usr/local/bin/composer update …..
Problem: Change directory to Drupal 8/9 instance, and run composer require drupal/console Then, this error occur: Solution: Install 2 missing modules by running the below composer commands: composer require symfony/filesystem:”4.4.8 as 3.4.35″ composer require symfony/finder:”4.4.8 as 3.4.35″ Then run the composer require drupal/console again.