Warning: Trying to access array offset on value of type bool in E:\Apache\htdocs\parks\includes\profile.inc.php on line 23

Fatal error: Uncaught TypeError: htmlspecialchars(): Argument #1 ($string) must be of type string, null given in E:\Apache\htdocs\parks\includes\profile.inc.php:23 Stack trace: #0 E:\Apache\htdocs\parks\includes\profile.inc.php(23): htmlspecialchars(NULL) #1 E:\Apache\htdocs\parks\profile.php(4): require_once('E:\\Apache\\htdoc...') #2 {main} thrown in E:\Apache\htdocs\parks\includes\profile.inc.php on line 23