How to change the .env on production

[EmanueleGuidotti]

Hi peeps,
I'm new to payload and currently I'm building my first application. After build it I put the app on Plesk with package.json, dist, .next and build resources. I run yarn install and launched the node server provided by Plesk. If I go to the default url all works correctly https://arkage.staging.arkage.it/, but if I go to the /admin/create-first-user directory I see which two api are called: https://arkage.staging.arkage.it/api/users/init and http://localhost:3000/api/users/me and the second one is incorrect. Is there a reason because the /me api is called under localhost? I've to change my .env file maybe?
If I try to check if the api works under the https://arkage.staging.arkage.it/api/users/me it works correctly. I don't understand why localhost is used only on one api call.
Anyone knows how to solve this problem?