我现在在给一个全新的Android Studio项目配置Room本地数据库，结果卡在了Gradle同步错误上，一直提示找不到KSP插件，快愁死了😭

具体的错误信息是这样的：

Plugin [id: 'com.google.devtools.ksp', version: '2.0.21-1.0.1'] was not found in any of the following sources:

• Gradle Core Plugins
• Included Builds
• Plugin Repositories (could not resolve plugin artifact 'com.google.devtools.ksp:com.google.devtools.ksp.gradle.plugin:2.0.21-1.0.1')

我已经尝试了这些方法，但都没用：

• 确认settings.gradle.kts里已经添加了gradlePluginPortal()仓库
• 在根目录的build.gradle.kts里配置了KSP插件的别名
• 在app/build.gradle.kts里添加了KSP插件和Room的依赖（不过目前Room的依赖还没生效，因为KSP先报错了）
• 把KSP对应的版本和别名都配置到gradle/libs.versions.toml里了
• 多次Invalidate Caches并重启Android Studio
• 检查了网络和防火墙问题，其他依赖都能正常下载，只有KSP不行

下面是我当前的配置文件内容：

gradle/libs.versions.toml #

[versions]
agp = "8.13.2"
kotlin = "2.0.21"
coreKtx = "1.17.0"
junit = "4.13.2"
junitVersion = "1.3.0"
espressoCore = "3.7.0"
lifecycleRuntimeKtx = "2.10.0"
activityCompose = "1.12.2"
composeBom = "2024.09.00"
navigationCompose = "2.9.6"

[libraries]
androidx-core-ktx = { group = "androidx.core", name = "core-ktx", version.ref = "coreKtx" }
junit = { group = "junit", name = "junit", version.ref = "junit" }
androidx-junit = { group = "androidx.test.ext", name = "junit", version.ref = "junitVersion" }
androidx-espresso-core = { group = "androidx.test.espresso", name = "espresso-core", version.ref = "espressoCore" }
androidx-lifecycle-runtime-ktx = { group = "androidx.lifecycle", name = "lifecycle-runtime-ktx", version.ref = "lifecycleRuntimeKtx" }
androidx-activity-compose = { group = "androidx.activity", name = "activity-compose", version.ref = "activityCompose" }
androidx-compose-bom = { group = "androidx.compose", name = "compose-bom", version.ref = "composeBom" }
androidx-compose-ui = { group = "androidx.compose.ui", name = "ui" }
androidx-compose-ui-graphics = { group = "androidx.compose.ui", name = "ui-graphics" }
androidx-compose-ui-tooling = { group = "androidx.compose.ui", name = "ui-tooling" }
androidx-compose-ui-tooling-preview = { group = "androidx.compose.ui", name = "ui-tooling-preview" }
androidx-compose-ui-test-manifest = { group = "androidx.compose.ui", name = "ui-test-manifest" }
androidx-compose-ui-test-junit4 = { group = "androidx.compose.ui", name = "ui-test-junit4" }
androidx-compose-material3 = { group = "androidx.compose.material3", name = "material3" }
androidx-navigation-compose = { group = "androidx.navigation", name = "navigation-compose", version.ref = "navigationCompose" }

[plugins]
android-application = { id = "com.android.application", version.ref = "agp" }
kotlin-android = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" }
kotlin-compose = { id = "org.jetbrains.kotlin.plugin.compose", version.ref = "kotlin" }

根目录 build.gradle.kts #

plugins {
    alias(libs.plugins.android.application) apply false
    alias(libs.plugins.kotlin.android) apply false
    alias(libs.plugins.kotlin.compose) apply false
}

app/build.gradle.kts #

plugins {
    alias(libs.plugins.android.application)
    alias(libs.plugins.kotlin.android)
    alias(libs.plugins.kotlin.compose)
}

android {
    namespace = "com.example.officehelper"
    compileSdk {
        version = release(36)
    }

    defaultConfig {
        applicationId = "com.example.officehelper"
        minSdk = 34
        targetSdk = 36
        versionCode = 1
        versionName = "1.0"

        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            isMinifyEnabled = false
            proguardFiles(
                getDefaultProguardFile("proguard-android-optimize.txt"),
                "proguard-rules.pro"
            )
        }
    }
    compileOptions {
        sourceCompatibility = JavaVersion.VERSION_11
        targetCompatibility = JavaVersion.VERSION_11
    }
    kotlinOptions {
        jvmTarget = "11"
    }
    buildFeatures {
        compose = true
    }
}

dependencies {
    implementation(libs.androidx.core.ktx)
    implementation(libs.androidx.lifecycle.runtime.ktx)
    implementation(libs.androidx.activity.compose)
    implementation(platform(libs.androidx.compose.bom))
    implementation(libs.androidx.compose.ui)
    implementation(libs.androidx.compose.ui.graphics)
    implementation(libs.androidx.compose.ui.tooling.preview)
    implementation(libs.androidx.compose.material3)
    implementation(libs.androidx.navigation.compose)
    testImplementation(libs.junit)
    androidTestImplementation(libs.androidx.junit)
    androidTestImplementation(libs.androidx.espresso.core)
    androidTestImplementation(platform(libs.androidx.compose.bom))
    androidTestImplementation(libs.androidx.compose.ui.test.junit4)
    debugImplementation(libs.androidx.compose.ui.tooling)
    debugImplementation(libs.androidx.compose.ui.test.manifest)
}

不管我怎么调整，都是同一个错误，感觉Gradle就是没法在线找到KSP插件。有没有大佬能帮我看看哪里出错了？真的万分感谢！