The content encoding error occurs when accessing sites, especially PHP files, the following error messages  were usually displayed on different browsers

Firefox :  Content Encoding Error

Google Chrome :  Error 330

Steps to resolve:

This error occurs since the directive zlib.output_compression in your php.ini.

– To find php.in file location, execute the following command

php -i |grep php.ini

Edit php.ini file

– Find the directive zlib.output_compression and turn it On

zlib.output_compression = On

– Restart httpd

/etc/init.d/httpd restart

Done 🙂