PHP Fatal error: Uncaught RuntimeException: APP_ENV environment variable is not defined

Question

I am deploying Symfony 4 project on production. Created .env file with a content:

APP_ENV=prod
APP_DEBUG=0

Run composer:

$ composer install --no-dev --optimize-autoloader

Getting error:

Script cache:clear returned with error code 255
!!  PHP Fatal error:  Uncaught RuntimeException:
 APP_ENV environment variable is not defined.
 You need to define environment variables for
 configuration or add "symfony/dotenv" as a Composer
 dependency to load variables from a .env file. in 
/var/www/symfony4_project/bin/console:20
!!  Stack trace:
!!  #0 {main}
!!    thrown in /var/www/symfony4_project/bin/console on line 20
!!  
Script @auto-scripts was called via post-install-cmd

Symfony documentation about deployment and environment setting is very narrow and foggy.

It is not clear where I should set the production environments.

From https://symfony.com/doc/current/configuration.html

sentence "If you decide to set real environment variables on production, the .env files will not be loaded if Symfony detects that a real APP_ENV environment variable exists and is set to prod."

Where should I look for this real APP_ENV existence?

As I found on stackoverflow and github, there are many questions realated, but not so many answers.

Thanks for help.

I deploed project and couldn't access it, i found, that symfony 4 needs apache2 bundle to run: symfony.com/doc/current/setup/web_server_configuration.html — Mantaz
– Mantaz, Commented Dec 9, 2018 at 14:43

famas23 · Accepted Answer · 2020-05-13 14:54:38Z

4

you need to install symfony/dotenv composer package to load your .env file. Take a look to the official documentation https://symfony.com/doc/current/components/dotenv.html The Dotenv Component parses .env files to make environment variables accessible.

Run composer require symfony/dotenv this should work.

edited May 13, 2020 at 14:54

answered Dec 8, 2018 at 13:13

famas23

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4 Comments

famas23 Over a year ago

Happy to help, could you vote and confirm my anwser please

Mantaz Over a year ago

Ahmed, I woted your answer. I need 15 points reputation, to make it visible. Thanks, one more time.

bcag2 Over a year ago

@fama23 is --dev required? original question is about prod deployment!

famas23 Over a year ago

Nah, not required, I gonna remove from the answer. Dotenv should be installed for all the nev. Thanks

Arthur Bouchard · Accepted Answer · 2019-04-23 08:57:33Z

If you've got this error in prod since Flex 1.2 in 2019 and you don't want to use .env file but the environment variables of your system :

It's because of changes : https://symfony.com/blog/new-in-symfony-flex-1-2 : Please read Improved the handling of .env files on blog

In order :

You have to push your .env on git, but only this .env file
Developpers will create .env.local to override .env file for dev
symfony/dotenv is in require-dev section of composer.json
When you want to deploy :
1. Get the git repo (without /vendors, of course)
2. Run composer dump-env prod --empty to generate a .env.local.php file
3. Install your dependencies via composer install --no-dev [Other prod args]

You can now enjoy your prod env without symfony/dotenv composant installed.

Sebastian · Accepted Answer · 2018-12-08 12:14:48Z

0

I need a little bit more information to solve your problem.

First of all - just to be sure: did you add the dotenv dependency to your composer as hinted in your debug message: composer require symfony/dotenv

Also, what kind of symfony installation is it? Just a basic symfony/skeleton? In generall if you just installed a basic symfony/sekleton or website-skeleton changing the value of APP_ENV in .env should work! But we'll work that out.

Please verify that you installed dotenv and provide the information I am looking for.

edited Dec 8, 2018 at 12:14

answered Dec 8, 2018 at 12:08

Sebastian

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1 Comment

Mantaz Over a year ago

It is Symfony4. I don't know how to add dotenv dependency to the composer.

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