403 late at night, is this really throttling??

Im getting this error:

<pre>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">\n<HTML><HEAD><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">\n<TITLE>ERROR: The request could not be satisfied</TITLE>\n</HEAD><BODY>\n<H1>403 ERROR</H1>\n<H2>The request could not be satisfied.</H2>\n<HR noshade size="1px">\nThis distribution is not configured to allow the HTTP request method that was used for this request. The distribution supports only cachable requests.\nWe can\'t connect to the server for this app or website at this time. There might be too much traffic or a configuration error. Try again later, or contact the app or website owner.\n<BR clear="all">\nIf you provide content to customers through CloudFront, you can find steps to troubleshoot and help prevent this error by reviewing the CloudFront documentation.\n<BR clear="all">\n<HR noshade size="1px">\n<PRE>\nGenerated by cloudfront (CloudFront)\nRequest ID: AStVIqFGEROLBohIh5UJCOE8mNsb1jjT7gAiDFNETWc15rbElxMxTg==\n</PRE>\n<ADDRESS>\n</ADDRESS>\n</BODY></HTML>

</pre>

It was working and without changing anything at all, this suddenly started to come back from any request to the API - Anybody understand what this means?