Ошибка в админке

[07-Sep-2023 22:07:32 Europe/Moscow] PHP Fatal error:  Uncaught Error: Call to a member function fetch() on boolean in /home/users/j/j04304490/domains/your-wap.ru/core/autoload/db.class.php:94
Stack trace:
#0 /home/users/j/j04304490/domains/your-wap.ru/pages/apanel/index.php(20): db->fetch('\r\n\tSELECT * FRO...')
#1 /home/users/j/j04304490/domains/your-wap.ru/index.php(28): include('/home/users/j/j...')
#2 {main}
  thrown in /home/users/j/j04304490/domains/your-wap.ru/core/autoload/db.class.php on line 94

public function fetch($query = false, $params = false) {
if (is_array($params)) {
$st = $this->db->prepare($query);
$st->execute($params); 
} else {
$st = $this->db->query($query);
}
$st = $st->fetch(PDO::FETCH_ASSOC); 
$this->SqlCount++;
return $st;
}

$st = $st->fetch(PDO::FETCH_ASSOC);