I used this command for importing Apache log files but I am getting the following error message
$ python /home/nube/webapps/piwik/misc/log-analytics/import_logs.py --url=http://piwik.virtualorbis.net/index.php access_log.processed.3 --idsite=1 --enable-reverse-dns --enable-http-errors --enable-http-redirects --enable-static --enable-bots
2017-04-24 21:01:16,839: [INFO] Error when connecting to Piwik: <urlopen error Piwik returned an invalid response: <!DOCTYPE html>
<html id="ng-app" ng-app="piwikApp">
<head>
<meta charset="utf-8">
<title>Sign in - Piwik</title>
<meta http-equiv="X-UA-Compatible" content="IE=EDGE,chrome=1"/>
<meta name="viewport" content="initial-scale=1.0"/>
<meta name="generator" content="Piwik - free/libre analytics platform"/>
<meta name="description" content="free/libre analytics platform"/>
<meta name="apple-itunes-app" content="app-id=737216887" />
<meta name="robots" content="index,follow">
<link rel="shortcut icon" href="plugins/CoreHome/images/favicon.png"/>
<link rel="mask-icon" href="plugins/CoreHome/images/applePinnedTab.svg" color="#d4291f">
<script type="text/javascript">
var piwik = {};
piwik.token_auth = "anonymous";
piwik.piwik_url = "http://piwik.virtualorbis.net/";
piwik.cacheBuster = "4dda6223d6363dfbce64cbd30d7e5cb5";
piwik.numbers = {
patternNumber: "#,##0.###",
patternPercent: "#,##0%",
patternCurrency: "¤#,##0.00",
symbolPlus: "+",
symbolMinus: "-",
symbolPercent: "%",
symbolGroup: ",",
symbolDecimal: "."