firebase sensitive data (.env) appear when view page source

[mazahagenggong]

Reproduction

https://nuxt-website-ma-zaha-1.vercel.app/

Steps to reproduce the bug

view page source

Expected behavior

when view page source, firebase data in .env appears in the script

Actual behavior

Sensitive data in the .env should not be seen by other people

Additional information

how do I solve it so that the data in .env doesn't appear when view page source?

[posva]

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