Android：Could not GET xxxx Received status code 500 from server: Internal Privoxy Error【已解决】

Time：20190517
Android Studio 3.4.1

导入项目后提示

Could not HEAD 'http://maven.aliyun.com/nexus/content/groups/public/org/apache/httpcomponents/httpcomponents-client/4.5.6/httpcomponents-client-4.5.6.pom'. Received status code 500 from server: Internal Privoxy Error

Caused by: org.gradle.internal.resource.transport.http.HttpErrorStatusCodeException: Could not GET 'http://maven.aliyun.com/nexus/content/groups/public/org/ow2/asm/asm/6.0/asm-6.0.pom.sha1'. Received status code 500 from server: Internal Privoxy Error

或

Could not GET 'http://maven.aliyun.com/nexus/content/groups/public/org/ow2/asm/asm/6.0/asm-6.0.pom.sha1'. Received status code 500 from server: Internal Privoxy Error 

总之就是请求阿里云的maven库时提示Received status code 500 from server: Internal Privoxy Error，但直接点击链接，使用浏览器还是可以下载的。
直接搜索查找解决方法，大多是因为代理proxy设置导致无法访问到公司内建maven库，但阿里云不是我们公司的，删除后无用。
虽然没用但附上：
删除或注释掉gradle.properties中的代理部分即可，as的设置有时去掉设置还是没有生效或者更新

最终解决方法如下
File > setting > Build,Execution,Deployment > Remote jar repositories
在Maven Jar Repositories中添加http://maven.aliyun.com/nexus/content/groups/public，重新sync或build即可。