팝업 관리

Warning: Undefined variable $conn in C:\xampp\htdocs\nurimcocom\doc\admin\tab\popupinfo.php on line 87

Fatal error: Uncaught TypeError: mysqli_query(): Argument #1 ($mysql) must be of type mysqli, null given in C:\xampp\htdocs\nurimcocom\doc\admin\tab\popupinfo.php:87 Stack trace: #0 C:\xampp\htdocs\nurimcocom\doc\admin\tab\popupinfo.php(87): mysqli_query(NULL, 'SELECT * FROM s...') #1 {main} thrown in C:\xampp\htdocs\nurimcocom\doc\admin\tab\popupinfo.php on line 87