[增添]添加了datasource的setting数据库以及默认值

vendor/symfony/translation/Exception/IncompleteDsnException.php

@@ -0,0 +1,24 @@
+<?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\Translation\Exception;
+
+class IncompleteDsnException extends InvalidArgumentException
+{
+    public function __construct(string $message, ?string $dsn = null, ?\Throwable $previous = null)
+    {
+        if ($dsn) {
+            $message = sprintf('Invalid "%s" provider DSN: ', $dsn).$message;
+        }
+
+        parent::__construct($message, 0, $previous);
+    }
+}