VSCODEでWARファイルの作成ができなくなりました。初心者で解決方法がわからず困っています。

PS C:\workspace\board-app-sample> gradle :build:app:war --warning-mode all             

> Configure project :app
The compile configuration has been deprecated for dependency declaration. This will fail with an error in Gradle 7.0. Please use the implementation configuration instead. Consult the upgrading guide for further information: https://docs.gradle.org/6.8.2/userguide/upgrading_version_5.html#dependencies_should_no_longer_be_declared_using_the_compile_and_runtime_configurations
        at build_44phxzx733luf61bnicjmj8p0$_run_closure2.doCall(C:\workspace\board-app-sample\app\build.gradle:33)
        (Run with --stacktrace to get the full stack trace of this deprecation warning.)
The AbstractArchiveTask.archiveName property has been deprecated. This is scheduled to be removed in Gradle 7.0. Please use the archiveFileName property instead. See https://docs.gradle.org/6.8.2/dsl/org.gradle.api.tasks.bundling.AbstractArchiveTask.html#org.gradle.api.tasks.bundling.AbstractArchiveTask:archiveName for more details.
        at build_44phxzx733luf61bnicjmj8p0$_run_closure5.doCall(C:\workspace\board-app-sample\app\build.gradle:48)
        (Run with --stacktrace to get the full stack trace of this deprecation warning.)

FAILURE: Build failed with an exception.

* What went wrong:
Project 'build' not found in root project 'board-app-sample'.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights. 

* Get more help at https://help.gradle.org

/*
 * This file was generated by the Gradle 'init' task.
 *
 * This generated file contains a sample Java application project to get you started.
 * For more details take a look at the 'Building Java & JVM projects' chapter in the Gradle
 * User Manual available at https://docs.gradle.org/6.7/userguide/building_java_projects.html
 */

plugins {
    // Apply the application plugin to add support for building a CLI application in Java.
    id 'application'

    id 'war' // add
}

repositories {
    // Use JCenter for resolving dependencies.
    jcenter()
}

dependencies {
    // Use JUnit Jupiter API for testing.
    testImplementation 'org.junit.jupiter:junit-jupiter-api:5.6.2'

    // Use JUnit Jupiter Engine for testing.
    testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine'

    // This dependency is used by the application.
    implementation 'com.google.guava:guava:29.0-jre'

    providedCompile 'javax.servlet:javax.servlet-api:3.1.0' // add

   33行目＊ここでエラーが出ている compile group: 'mysql', name: 'mysql-connector-java', version: '5.1.49' // add
}

application {
    // Define the main class for the application.
    mainClass = 'board.app.sample.App'
}

tasks.named('test') {
    // Use junit platform for unit tests.
    useJUnitPlatform()
}

// ファイル末尾に追記
war {
   48行目＊ここでエラーが出ている archiveName 'boardsample.war'
}
tasks.withType(JavaCompile) {
    options.encoding = 'UTF-8'
}