PHP-FPM: how to fix error "Failed to read FastCGI header"

Question

I am using a PHP script to download image files from YouTube. It runs for a few seconds and then gives error "Error code 500". I checked the error log of the domain and found this error  "Failed to read FastCGI header".

How can I fix this error?

Answer 1

Did you check the file phpX.X-fpm.log, where X.X represents your PHP version?

If you see error "execution timed out" in the phpX.X-fpm.log file, you need to increase the value of the parameter "request_terminate_timeout" in "php-fpm.conf". The parameter "request_terminate_timeout" may be present in php-fpm configuration file of your domain.

E.g.

request_terminate_timeout = 180s

You can also increase the value of the parameter "max_execution_time".

E.g.

php_admin_value[max_execution_time] = 180