default services conflit ?

old.vendor/drupal/console/src/Extension/Discovery.php

@@ -0,0 +1,25 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Console\Extension\Discovery.
+ */
+
+namespace Drupal\Console\Extension;
+
+use Drupal\Core\Extension\ExtensionDiscovery;
+
+/*
+ * @see Remove DrupalExtensionDiscovery subclass once
+ * https://www.drupal.org/node/2503927 is fixed.
+ */
+class Discovery extends ExtensionDiscovery
+{
+    /**
+     * Reset internal static cache.
+     */
+    public static function reset()
+    {
+        static::$files = [];
+    }
+}