diff -u b/core/modules/field/src/Entity/FieldStorageConfig.php b/core/modules/field/src/Entity/FieldStorageConfig.php
--- b/core/modules/field/src/Entity/FieldStorageConfig.php
+++ b/core/modules/field/src/Entity/FieldStorageConfig.php
@@ -283,7 +283,7 @@
     // Check that the field type is known.
     $field_type = \Drupal::service('plugin.manager.field.field_type')->getDefinition($this->type, FALSE);
     if (!$field_type) {
-      throw new FieldException(String::format('Attempt to create a field storage of unknown type %type.', array('%type' => $this->type)));
+      throw new FieldException(String::format('Attempt to create a field storage of unknown type %type.', ['%type' => $this->type]));
     }
     $this->module = $field_type['provider'];