Fatal error: Uncaught mysqli_sql_exception: Unknown column 'active' in 'where clause' in T:\Xampp\htdocs\notifications\index.php:104 Stack trace: #0 T:\Xampp\htdocs\notifications\index.php(104): mysqli_query(Object(mysqli), 'Select * from n...') #1 {main} thrown in T:\Xampp\htdocs\notifications\index.php on line 104