Fatal error: Uncaught TypeError: extract(): Argument #1 ($array) must be of type array, null given in /home/readindia/public_html/course-detail.php:19
Stack trace:
#0 /home/readindia/public_html/course-detail.php(19): extract()
#1 {main}
thrown in /home/readindia/public_html/course-detail.php on line 19