It's not reset all files and folder permission in magento 1.9.2.4

[himansuahm]

When i execute below script it's display below error.
"Warning: chmod(): Operation not permitted in /home/ayrequestrianco/public_html/ddadev/magento-cleanup.php on line 9" and files and folder permission not reset in magento 1.9.2.4.

[MMB1983]

Same with 1.9.4.3 version still on PHP-FPM 5.6
[26-Nov-2019 14:39:12 UTC] PHP Warning: chmod(): Operation not permitted in ../magento-cleanup.php on line 9
[26-Nov-2019 14:39:16 UTC] PHP Warning: chmod(): Operation not permitted in ../magento-cleanup.php on line 8