I’m new to app development, barely started. i wanted to make a flutter chat app with fire base. after getting all the codes done. now i cant make it

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1st problem is (this note appears when >flutter build apk –debug):
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.

2nd problem is (i dont know what this is): Font asset “MaterialIcons-Regular.otf” was tree-shaken, reducing it from 1645184 to 2484 bytes (99.8% reduction). Tree-shaking can be disabled by providing the –no-tree-shake-icons flag when building your app.

lastly i get this error:
e: C:/Users/Admin/.gradle/caches/transforms-3/1b7fdbeddfa3604f4c648b5a9ccca1db/transformed/jetified-firebase-messaging-24.0.0/jars/classes.jar!/
META-INF/com.google.firebase-firebase-messaging.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.8.0, expected version is 1.6.0.

**but the apk is even though build and when i try to login with google this appears : **PlatformException(sign_in_failed, com.google.android.gms.common.api.b: 10:, null, null)

please help me out

i expect a successful login to my app

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