取消https验证，并添加vendor文件夹。

vendor/symfony/var-dumper/Caster/EnumStub.php

@@ -0,0 +1,30 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\VarDumper\Caster;
+
+use Symfony\Component\VarDumper\Cloner\Stub;
+
+/**
+ * Represents an enumeration of values.
+ *
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class EnumStub extends Stub
+{
+    public $dumpKeys = true;
+
+    public function __construct(array $values, bool $dumpKeys = true)
+    {
+        $this->value = $values;
+        $this->dumpKeys = $dumpKeys;
+    }
+}