For those who have the same problem as me … I’ve tried it myself and find out that the entrypoint in quasar.config is set by defoult to only accept files with .js or vue extension. So I had created an .env file with some keys and it was not recognizing.
Then to solve: Either you arrow the .env as a recognizable file or change the .env to .js and everything will work.
Thank you!

Good night friends!
I have a problem. I was in development mode and everything was working normally.
But when I went to build the application - pwa appeared an error.
Does anyone know why this happens only in build?
Thank you very much in advance.

Now… errro in build