We have updated alt-mod-passenger to version 5.3.7-2 on all of our servers. This release is for all servers using CloudLinux 6/7, EasyApache 4 and httpd24.
alt-mod-passenger 5.3.7-2
With this update, directives such as PassengerFriendlyErrorPages and PassengerAppEnv can now be used from the .htaccess file. This lets end users see errors from their application during the development process. For example, if you add the PassengerAppEnv development or PassengerFriendlyErrorPages to the .htaccess file on the application page, and there is an error, you will see an error page with information about what went wrong.

This is much more convenient when developing and debugging an application. If the directives are turned off, you will still see an error page but no information will be shown.

This mode will be useful once the development process is finished, which means it's suitable for production mode. You can find more information about PassengerFriendlyErrorPages and PassengerAppEnv.
All Nuagerie servers are automatically updated, however, the manual update commands have been included.
For RPM-based systems:
To update, run:
# yum update alt-mod-passenger
To install, run:
# yum install alt-mod-passenger
For httpd24:
To update, run:
# yum update httpd24-alt-mod-passenger
To install, run:
# yum install httpd24-alt-mod-passenger
For EasyApache 4:
To update, run:
$ yum update ea-apache24-mod-alt-passenger
To install, run:
$ yum install ea-apache24-mod-alt-passenger