Where is located the APP_KEY variable?

Hi, i’m trying to restore LibreNMS by finding the APP_KEY variable to make my graphs works, because i didn’t saved the last key and generated a new one :sweat:

In the ./validate.php file i got this error :

[FAIL] APP_KEY does not match key used to encrypt data. APP_KEY must be the same on all nodes.
If you rotated APP_KEY, run lnms key:rotate to resolve.

So, i wanted to know if the APP_KEY variable is stored by librenms itself or by the database (I’m using Docker)
I will maybe restore all the data from yesterday

Edit : I reinstalled LibreNMS from scratch

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