Fatal error: Uncaught mysqli_sql_exception: Unknown column 'Oleg' in 'where clause' in /var/www/fundaria/php/Classes/Mysqli.php:145 Stack trace: #0 /var/www/fundaria/php/Classes/Mysqli.php(145): mysqli->query() #1 /var/www/fundaria/php/functions/ogs.php(168): Mysql->Select() #2 /var/www/fundaria/php/functions/ogs.php(83): getName() #3 /var/www/fundaria/index.html(104): ogs() #4 {main} thrown in /var/www/fundaria/php/Classes/Mysqli.php on line 145