Warning: mysqli_query() expects at least 2 parameters, 1 given in /www/vhosts/115556/referee.ru/plugins/protocol.php on line 21

Fatal error: Uncaught Error: Call to undefined function mysql_error() in /www/vhosts/115556/referee.ru/plugins/protocol.php:21 Stack trace: #0 /www/vhosts/115556/referee.ru/index.php(194): include_once() #1 {main} thrown in /www/vhosts/115556/referee.ru/plugins/protocol.php on line 21