title: Android Sdk Manager Failed to download any source list
body: <p>I'm trying to download platform-tools from Sdk Manager. but when I run :<code>C:\Users\tavak\AppData\Local\Android\Sdk\tools\bin\sdkmanager --list</code>
  or any other commands related like \sdkmanager platform-tools
  I get this error :</p>
  
  <blockquote>
    <p>Warning: Failed to download any source lists!
    Warning: java.io.FileNotFoundException: <a href="https://dl.google.com/android/repository/repository2-1.xml" rel="noreferrer">https://dl.google.com/android/repository/repository2-1.xml</a></p>
  </blockquote>
  
  <p>The antivirus is disabled , and I'm running a proxy in whole device. I can successfully open the url in my browser. help me if possible !</p>