android gradle plugin - Flutter run fails with "Cannot resolve external dependency because no repositories are defined&

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After experiencing some app bundle building errors, I decided to start from scratch. I deleted my android folder, and then ran flutter create to create a new one. My gradle files were originally created with Kotlin (build.gradle.kts), and flutter built them this way again on flutter create. Before deleting the android folder and running create, my app ran fine. Yet, whenever I run my app now, I get this error:

Cannot resolve external dependency com.android.tools.build:gradle:8.7.3 because no repositories are defined.
Required by:
    project :gradle
Cause 2: .gradle.internal.resolve.ModuleVersionNotFoundException: Cannot resolve external dependency
.jetbrains.kotlin:kotlin-stdlib:1.9.24 because no repositories are defined.
Required by:
    project :gradle
Cause 3: .gradle.internal.resolve.ModuleVersionNotFoundException: Cannot resolve external dependency
.jetbrains.kotlin:kotlin-reflect:1.9.24 because no repositories are defined.
Required by:
    project :gradle

My project level build.gradle.kts:

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

val newBuildDir: Directory = rootProject.layout.buildDirectory.dir("../../build").get()
rootProject.layout.buildDirectory.value(newBuildDir)

subprojects {
    val newSubprojectBuildDir: Directory = newBuildDir.dir(project.name)
    project.layout.buildDirectory.value(newSubprojectBuildDir)
}
subprojects {
    project.evaluationDependsOn(":app")
}

tasks.register<Delete>("clean") {
    delete(rootProject.layout.buildDirectory)
}

My app level build.gradle.kts:

plugins {
    id("com.android.application")
    id("kotlin-android")
    // The Flutter Gradle Plugin must be applied after the Android and Kotlin Gradle plugins.
    id("dev.flutter.flutter-gradle-plugin")
}

android {
    namespace = "com.example.hive_habits"
    compileSdk = flutterpileSdkVersion
    ndkVersion = flutter.ndkVersion

    compileOptions {
        sourceCompatibility = JavaVersion.VERSION_11
        targetCompatibility = JavaVersion.VERSION_11
    }

    kotlinOptions {
        jvmTarget = JavaVersion.VERSION_11.toString()
    }

    defaultConfig {
        // TODO: Specify your own unique Application ID (.html).
        applicationId = "com.example.hive_habits"
        // You can update the following values to match your application needs.
        // For more information, see: /to/review-gradle-config.
        minSdk = flutter.minSdkVersion
        targetSdk = flutter.targetSdkVersion
        versionCode = flutter.versionCode
        versionName = flutter.versionName
    }

    buildTypes {
        release {
            // TODO: Add your own signing config for the release build.
            // Signing with the debug keys for now, so `flutter run --release` works.
            signingConfig = signingConfigs.getByName("debug")
        }
    }
}

flutter {
    source = "../.."
}

My settings.gradle.kts:

pluginManagement {
    val flutterSdkPath = run {
        val properties = java.util.Properties()
        file("local.properties").inputStream().use { properties.load(it) }
        val flutterSdkPath = properties.getProperty("flutter.sdk")
        require(flutterSdkPath != null) { "flutter.sdk not set in local.properties" }
        flutterSdkPath
    }

    includeBuild("$flutterSdkPath/packages/flutter_tools/gradle")

    repositories {
        google()
        mavenCentral()
        gradlePluginPortal()
    }
}

plugins {
    id("dev.flutter.flutter-plugin-loader") version "1.0.0"
    id("com.android.application") version "8.7.0" apply false
    id(".jetbrains.kotlin.android") version "1.8.22" apply false
}

include(":app")

My flutter doctor output:

PS C:\hive_habits> flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel stable, 3.29.2, on Microsoft Windows [Version
    10.0.26100.3624], locale en-US)
[√] Windows Version (11 Home 64-bit, 24H2, 2009)
[√] Android toolchain - develop for Android devices (Android SDK
    version 35.0.0)
[√] Chrome - develop for the web
[√] Android Studio (version 2023.2)
[√] VS Code (version 1.98.2)
[√] Connected device (2 available)
[√] Network resources

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