Issue #3275402 by gnikolovski: Yaml parse error

symfony_mailer.services.yml

 services:
   symfony_mailer:
     class: Drupal\symfony_mailer\Mailer
-    arguments: ['@event_dispatcher', '@renderer', '@module_handler', '@language.default', '@language_manager', '@logger.factory', '@current_user', '@theme.manager', '@theme.initialization', '@account_switcher'],
+    arguments: ['@event_dispatcher', '@renderer', '@module_handler', '@language.default', '@language_manager', '@logger.factory', '@current_user', '@theme.manager', '@theme.initialization', '@account_switcher']
   email_factory:
     class: Drupal\symfony_mailer\EmailFactory
     arguments: ['@plugin.manager.email_builder']