Warning: Undefined variable $connection in /home/imam313/public_html/thumbnail.php on line 67

Fatal error: Uncaught TypeError: mysqli_close(): Argument #1 ($mysql) must be of type mysqli, null given in /home/imam313/public_html/thumbnail.php:67 Stack trace: #0 /home/imam313/public_html/thumbnail.php(67): mysqli_close(NULL) #1 {main} thrown in /home/imam313/public_html/thumbnail.php on line 67