HTTP Error 503: POST

I was trying to build an apk to android and I got this error

× Requesting snapshot upload - failed!
HTTP Error 503: POST
<!DOCTYPE html>
                <meta name="viewport" content="width=device-width, initial-scale=1">
                <meta charset="utf-8">
                <title>Application Error</title>
                <style media="screen">
                  html,body,iframe {
                        margin: 0;
                        padding: 0;
                  html,body {
                        height: 100%;
                        overflow: hidden;
                  iframe {
                        width: 100%;
                        height: 100%;
                        border: 0;
                <iframe src="//"></iframe>

After that I tryied do login again and this error disappeared, but the build status was QUEUED, not SUCCESS.

This looks like a temporary problem. If it persists, contact support: