Fatal error: Uncaught mysqli_sql_exception: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '' at line 1 in /var/www/app.improve-us.com/inc/incFunciones.php:220 Stack trace: #0 /var/www/app.improve-us.com/inc/incFunciones.php(220): mysqli->query() #1 /var/www/app.improve-us.com/page/pageUnsubscribe.php(5): func_update_tabla() #2 /var/www/app.improve-us.com/index.php(106): include('...') #3 {main} thrown in /var/www/app.improve-us.com/inc/incFunciones.php on line 220