Symfony version(s) affected

7.2.1

Description

In Symfony 7.1, I had a variable named MAILER_DSN in my .env.
I now renamed it to FOO_MAILER_DSN and upgraded to Symfony 7.2. This worked fine on my DEV machine.
When deploying to PROD, I did (as recommended at https://symfony.com/doc/current/deployment.html#d-clear-your-symfony-cache)

APP_ENV=prod APP_DEBUG=0 php bin/console cache:clear

And got:

In EnvVarProcessor.php line 221:
Environment variable not found: "MAILER_DSN".

So I deleted the cache folder manually:

rm -rf var/cache/prod/*

And then everything was fine:

APP_ENV=prod APP_DEBUG=0 php bin/console cache:clear

Gave me the expected:

// Clearing the cache for the prod environment with debug false
[OK] Cache for the "prod" environment (debug=false) was successfully cleared.

How to reproduce

See above

Possible Solution

I already suggested to mention the manual way (rm ...) on the deployment page: symfony/symfony-docs#19836

So this is now the second issue with cache:clear I'm running into while deploying.

Additional Context

No response