Today，i meet the problem again. After I replace the old computer and migrate the assets from the old computer to the new computer. I started configuring the Android environment according to the video. Then start packaging, this similar problem occured.
I tried all the solutions mentioned above and couldn’t solve it. In a blog post, the author mentions Android gradle，so I turned my eyes to Messages rather than Error. “download ,gradle” ,"Connect time out ". Delete folder named “.gradle” in "C:\Users\xxxxx", close all proxy.
Start packing, it succeed.
There are a number of factors contributing to this problem, so pay more attention to the message above the error.