Incorrect http header content-type

[justice_rules76]

Hi,

The XML Sitemap Validator tool displays "Incorrect http header content-type" error message, how can i resolve this error please.


https://www.xml-sitemaps.com/index.php?op=validate-xml-sitemap&go=1&sitemapurl=https%3A%2F%2Fwww.dost-tech.com&submit=Validate


https://www.xml-sitemaps.com/http-headers-viewer.html?op=http-headers-viewer&go=1&pageurl=https%3A%2F%2Fdost-tech.com&se=xmlsitemaps&submit=View

Deprecated: mysql_insert_id(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead in /home/xmlsites/public_html/pages/class.db.inc.php on line 236

Warning: mysql_insert_id(): Access denied for user ''@'localhost' (using password: NO) in /home/xmlsites/public_html/pages/class.db.inc.php on line 236

Warning: mysql_insert_id(): A link to the server could not be established in /home/xmlsites/public_html/pages/class.db.inc.php on line 236

Deprecated: mysql_insert_id(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead in /home/xmlsites/public_html/pages/class.db.inc.php on line 236

Warning: mysql_insert_id(): Access denied for user ''@'localhost' (using password: NO) in /home/xmlsites/public_html/pages/class.db.inc.php on line 236

Warning: mysql_insert_id(): A link to the server could not be established in /home/xmlsites/public_html/pages/class.db.inc.php on line 236

[XML-Sitemaps Support]

You need to enter your sitemap URL, not the website homepage URL.

[justice_rules76]

Sorry about that i should have pay more attention. Thank you for your help!