androidStudio Run Flutter项目时出现Could not download kotlin-compiler-embeddable.jar

网上修改gradle的方法都试了，VPN也挂了，还是出现这错误，困扰一天了，求大神解救

根目录的gradle中修改jcenter()为 def REPOSITORY_URL =
'http://maven.aliyun.com/nexus/content/groups/public/'
all { ArtifactRepository repo ->
if (repo instanceof MavenArtifactRepository) {
def url = repo.url.toString()
if (url.startsWith('https://repo1.maven.org/maven2') ||
url.startsWith('https://jcenter.bintray.com/')) {
remove repo
}
}
}
maven {
url REPOSITORY_URL
}