add

vendor/league/flysystem-cached-adapter/src/Storage/Memory.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace League\Flysystem\Cached\Storage;
+
+class Memory extends AbstractCache
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function save()
+    {
+        // There is nothing to save
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function load()
+    {
+        // There is nothing to load
+    }
+}