Contao Sitemap generates url for same page twice

I am using contao 4.4 instance.I have a problem in google sitemap generation. I have a newsletter page (page type = regular ) . In that page I have some newsletter articles (with teaser) . When I generate the sitemap, the url of these articles generated twice. When I checked the core I found a class which creates the page array for generating sitemap

vendor/contao/core-bundle/src/Resources/contao/classes/Backend.php
line no 662 - 680 .

Which append 'articles/' to the articles with teaser. So the sitemap generates url

1. with articles/
2. without articles/

The first one is the correct url.Second Url generate 404. How I fix the issue ?

I don't quite understand your setup. Are you talking about article teasers or newsletters? Can the issue be reproduced on demo.contao.org/contao?

My siteconfiguration is as follows

• created a regular page with hidden in navigation and created articles with configuration show teaser
• created another page and created elements as 'teaser articles' and select articles from the above page

I resolved the issue.
The url's were regenerated from the newsletter-bundle. In core bundle, the url of the article with teaser is generated. The newsletter-bundle is also contain hook for creating searchable page array. The hook regenerates the url. I wrote a function in vendor/contao/newsletter-bundle/src/Resources/contao/classes/Newsletter.php to check whether the array contain any duplicate url.


Modified function getSearchablePages() ( line 889-897
)

Code:

---

if($this->checkValidUrl($arrPages, $objItem, $strUrl)){
            $arrPages[] = sprintf($strUrl, ($objItem->alias ?: $objItem->id));
}

---

Defining new function for finding duplicate

Code:

---

public function checkValidUrl($arrPages, $objItem, $strUrl)
    {
        $alias      = $objItem->alias ?: $objItem->id;
        $urlExplode = explode('%s', $strUrl);
        $articleUrl = $urlExplode[0] . 'articles';
        foreach ($arrPages as $arrPage) {
            $validarticleUrl = $articleUrl . '/' . $alias;
            if (strcasecmp($arrPage,$validarticleUrl) == 0) {
                return false;
            }
        }
        return true;
    }

---