Fatal error: Uncaught mysqli_sql_exception: Column 'department' in WHERE is ambiguous in /home/u922826371/domains/jnvunoteshub.com/public_html/index.php:20 Stack trace: #0 /home/u922826371/domains/jnvunoteshub.com/public_html/index.php(20): mysqli->prepare() #1 {main} thrown in /home/u922826371/domains/jnvunoteshub.com/public_html/index.php on line 20