Warning: Undefined array key "tab1" in C:\xampp\htdocs\nurimcocom\doc\admin\tab\brandinfo.php on line 2

Warning: Undefined variable $conn in C:\xampp\htdocs\nurimcocom\doc\admin\tab\brandinfo.php on line 3

Fatal error: Uncaught TypeError: mysqli_query(): Argument #1 ($mysql) must be of type mysqli, null given in C:\xampp\htdocs\nurimcocom\doc\admin\tab\brandinfo.php:3 Stack trace: #0 C:\xampp\htdocs\nurimcocom\doc\admin\tab\brandinfo.php(3): mysqli_query(NULL, 'SELECT * FROM b...') #1 {main} thrown in C:\xampp\htdocs\nurimcocom\doc\admin\tab\brandinfo.php on line 3