Playconsole error

This App Bundle contains Java/Kotlin code, which may be obfuscated. We recommend that you upload a de-obfuscation file to facilitate analysis and debugging of crashes and ANRs.
Does anyone know how to fix this error

thanks for the answer, it happens that I published my apk on the playstore and when someone downloads the application he doesn’t log into firebase, when I install it directly from the phone there he logs in. I don’t understand what is causing this problem.