Fatal error: Uncaught Error: Interface "Drupal\locale\PluralFormulaInterface" not found in /home/www/drupal8/test/core/modules/locale/src/PluralFormula.php:13
Stack trace:
#0 {main}
thrown in /home/www/drupal8/test/core/modules/locale/src/PluralFormula.php on line 13