Packets out of order. Expected 1 received 0. Packet size=145
错误信息：
PHP Warning: Packets out of order. Expected 1 received 0. Packet size=145 in /var/www/html/laravel/vendor/laravel/framework/src/Illuminate/Database
/Connection.php on line 423解决方案：
1、修改 Mysql 配置文件 my.cnf
max_allowed_packet=512M
interactive_timeout=28800
wait_timeout=288002、修改 PHP 配置文件 php.ini
default_socket_timeout = 3003、重启 Mysql 和 PHP
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