Only one top level element is allowed in an XML document. Line: 188 Character: 8
</rss><script type="text/javascript">
You seem to have added some kind of Javascript that appears at the end of all requests, including your RSS feed. If you did this by manually editing the core PHP files, you should put it at the end of qa-page.php instead of qa-index.php.
Welcome to the Q&A site for Question2Answer.
If you have a question about Q2A, please ask here, in English.
To report a bug, please create a new issue on Github or ask a question here with the bug tag.
If you just want to try Q2A, please use the demo site.