这个报错一般是连接不到目标服务器，加载不到依赖会出现，解决思路有以下两种

情况 一、配置了代理，代理没有生效导致的

• 解决方案：可以手动去以下目录.gradle目录下找gradle.properties将代理注释掉，或者删除掉该文件即可

C:\Users\ITPlus\.gradle\gradle.properties

注释掉代理，前面加#号即可

# For more details on how to configure your build environment visit
# http://www.gradle.org/docs/current/userguide/build_environment.html
#
# Specifies the JVM arguments used for the daemon process.
# The setting is particularly useful for tweaking memory settings.
# Default value: -Xmx1024m -XX:MaxPermSize=256m
# org.gradle.jvmargs=-Xmx2048m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8
#
# When configured, Gradle will run in incubating parallel mode.
# This option should only be used with decoupled projects. More details, visit
# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
# org.gradle.parallel=true
#Mon Oct 26 17:59:58 CST 2020
#注释掉以下代理
#systemProp.http.proxyHost=huawei.com
#systemProp.http.proxyPort=80
#systemProp.https.proxyHost=huawei.com
#systemProp.https.proxyPort=80

情况二、镜像源访问不到导致的

• 解决方案：建议用阿里开源镜像即可，项目根配置gradle如下：

buildscript {

    repositories {
        maven { url 'https://maven.aliyun.com/repository/public' }
        maven { url 'https://maven.aliyun.com/repository/gradle-plugin' }
        maven { url 'https://maven.aliyun.com/repository/central' }
        maven { url 'https://maven.aliyun.com/repository/google' }
  
 }
    dependencies {
        classpath 'com.android.tools.build:gradle:4.1.0'
    }
}

allprojects {
    repositories {
        maven { url 'https://maven.aliyun.com/repository/public' }
        maven { url 'https://maven.aliyun.com/repository/gradle-plugin' }
        maven { url 'https://maven.aliyun.com/repository/central' }
        maven { url 'https://maven.aliyun.com/repository/google' }
        }
}