Update to laravel 7

vendor/symfony/http-kernel/Exception/UnexpectedSessionUsageException.php

@@ -0,0 +1,19 @@
+<?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\HttpKernel\Exception;
+
+/**
+ * @author Mathias Arlaud <mathias.arlaud@gmail.com>
+ */
+class UnexpectedSessionUsageException extends \LogicException
+{
+}