If you’re working on Drupal core or a development site and get this error when running Drush commands, e.g. drush cr or drush pm-list…
PHP Fatal error: Declaration of Drush\Command\DrushInputAdapter::hasParameterOption() must be compatible with Symfony\Component\Console\Input\InputInterface::hasParameterOption($values, $onlyParams = false) in /Applications/DevDesktop/tools/vendor/drush/drush/lib/Drush/Command/DrushInputAdapter.php on line 27
It’s because in the next Drupal minor release (8.4.x) Symfony components have been updated to ~3.2 (in 8.3.x they remain at 2.8.x)
This causes a conflict with Drush – you should upgrade to Drush 9, which you can do via:
composer require drush/drush:9.*