Flutter- Could not resolve org.jetbrains.kotlin:kotlin-gradle-plugin:1.6.10

Question

I get this error when I create and run a new project.This is the error I get when I run the project normally. I didn't do anything extra. Even if I run it in Visual Studio Code, this error appears. Can you help me ?

This is below the flutter file android > build.gradle file:

buildscript {
    ext.kotlin_version = '1.6.10'
    repositories {
        google()
        mavenCentral()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:4.1.0'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }
}

allprojects {
    repositories {
        google()
        mavenCentral()
    }
}

rootProject.buildDir = '../build'
subprojects {
    project.buildDir = "${rootProject.buildDir}/${project.name}"
}
subprojects {
    project.evaluationDependsOn(':app')
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

This is the error I got:

FAILURE: Build failed with an exception.

* What went wrong:
A problem occurred configuring root project 'android'.
> Could not resolve all artifacts for configuration ':classpath'.
   > Could not resolve org.jetbrains.kotlin:kotlin-gradle-plugin:1.6.10.
     Required by:
         project :
      > Could not resolve org.jetbrains.kotlin:kotlin-gradle-plugin:1.6.10.
         > Could not get resource 'https://dl.google.com/dl/android/maven2/org/jetbrains/kotlin/kotlin-gradle-plugin/1.6.10/kotlin-gradle-plugin-1.6.10.pom'.
            > Could not GET 'https://dl.google.com/dl/android/maven2/org/jetbrains/kotlin/kotlin-gradle-plugin/1.6.10/kotlin-gradle-plugin-1.6.10.pom'.
               > Connect to localhost:44444 [localhost/127.0.0.1, localhost/0:0:0:0:0:0:0:1] failed: Connection refused: connect
      > Could not resolve org.jetbrains.kotlin:kotlin-gradle-plugin:1.6.10.
         > Could not get resource 'https://repo.maven.apache.org/maven2/org/jetbrains/kotlin/kotlin-gradle-plugin/1.6.10/kotlin-gradle-plugin-1.6.10.pom'.
            > Could not GET 'https://repo.maven.apache.org/maven2/org/jetbrains/kotlin/kotlin-gradle-plugin/1.6.10/kotlin-gradle-plugin-1.6.10.pom'.
               > Connect to localhost:44444 [localhost/127.0.0.1, localhost/0:0:0:0:0:0:0:1] failed: Connection refused: connect

EDIT: I finally found the solution. The problem was the internet connection. Firstly, you should check your proxy settings and then I don't know if it might be but you can delete .gradle file.This solved the problem. Thanks for all the supports.