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Fatal error: Uncaught mysqli_sql_exception: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 in /var/www/html/classi/2025_SIA_A/Mannini/ProvaPerVerifica/Delete.php:20 Stack trace: #0 /var/www/html/classi/2025_SIA_A/Mannini/ProvaPerVerifica/Delete.php(20): mysqli_query() #1 {main} thrown in /var/www/html/classi/2025_SIA_A/Mannini/ProvaPerVerifica/Delete.php on line 20