How to solve "Unresolved reference: BuildKonfig" error? about buildkonfig HOT 4 OPEN

import com.android.build.gradle.internal.cxx.configure.gradleLocalProperties
import com.codingfeline.buildkonfig.compiler.FieldSpec.Type.STRING

plugins {
    alias(libs.plugins.kotlinMultiplatform)
    alias(libs.plugins.androidLibrary)
    id("co.touchlab.skie") version "0.6.1"
    kotlin("plugin.serialization") version "1.9.20"
    id("com.codingfeline.buildkonfig") version "0.15.1"
}


kotlin {
    androidTarget {
        compilations.all {
            kotlinOptions {
                jvmTarget = "1.8"
            }
        }
    }
    
    listOf(
        iosX64(),
        iosArm64(),
        iosSimulatorArm64()
    ).forEach {
        it.binaries.framework {
            baseName = "shared"
            isStatic = true
        }
    }

    sourceSets {
        commonMain.dependencies {
            //put your multiplatform dependencies here
            implementation(libs.kotlinx.coroutines.core)
            implementation(libs.ktor.client.core)
            implementation(libs.ktor.client.content.negotiation)
            implementation(libs.ktor.serialization.kotlinx.json)
            implementation(libs.kotlinx.datetime)
        }

        androidMain.dependencies {
            implementation(libs.androidx.lifecycle.viewmodel.ktx)
            implementation(libs.ktor.client.android)
        }

        iosMain.dependencies {
            implementation(libs.ktor.client.darwin)
        }

        commonTest.dependencies {
            implementation(libs.kotlin.test)
        }
    }
}

buildkonfig {
    packageName = "com.example.myApp"

    defaultConfigs {
        val apiKey: String = gradleLocalProperties(rootDir).getProperty("API_KEY")
        buildConfigField(STRING, "API_KEY", apiKey)
    }
}

android {
    namespace = "com.example.myApp"
    compileSdk = 34
    defaultConfig {
        minSdk = 24
    }
    compileOptions {
        sourceCompatibility = JavaVersion.VERSION_1_8
        targetCompatibility = JavaVersion.VERSION_1_8
    }
}