Can someone help me correctly configure the setting for the following warning?

i’m encountering an issue while trying to build my Android project using Gradle. The build fails with the following error:

[!] Your project requires a newer version of the Kotlin Gradle plugin.
Find the latest version on https://kotlinlang.org/docs/releases.html#release-details, then update
C:UsersMR_KABUTEYYDesktopFluttersmoke_detectorandroidbuild.gradle:
ext.kotlin_version = ”

I am new to flutter development and so far I have been testing the android app in debug mode. I want to release the app to share with friends and family. However, I keep getting errors when I try to build the apk (release).

when i try to run the app
.gradlecaches7.6.3file-changeslast-build.bin (Access is denied)

Closed 5 mins ago.

Closed 1 min ago.

[Fatal Error] x86_debug-1.0.0-edd8546116457bdf1c5bdfb13ecb9463d2bb5ed4.pom:2:1: Content is not allowed in prolog.
[Fatal Error] flutter_embedding_debug-1.0.0-edd8546116457bdf1c5bdfb13ecb9463d2bb5ed4.pom:2:1: Content is not allowed in prolog.

I’m new in flutter and trying to develop my first project, every time i try to run my project i get the following message:

I followed the steps recommended by the Flutter docs (https://docs.flutter.dev/deployment/android) to build and release an app but this procedure generates exceptions into my project