Fatal error: Uncaught TypeError: extract(): Argument #1 ($array) must be of type array, null given in /home/researchworld/public_html/RESEARCHWORLD-INCLUDE-DY/script_body.php:72 Stack trace: #0 /home/researchworld/public_html/RESEARCHWORLD-INCLUDE-DY/script_body.php(72): extract(NULL) #1 /home/researchworld/public_html/Conference/script.php(1): include('/home/researchw...') #2 /home/researchworld/public_html/Conference/index.php(18): include('/home/researchw...') #3 {main} thrown in /home/researchworld/public_html/RESEARCHWORLD-INCLUDE-DY/script_body.php on line 72