The Plugin Created a Feed That I can’t Edit/Remove

I installed the plugin to try before I buy. However, it created an xml file incorrectly on my page called podcast. Now that the plugin is deactivated and removed, this page only shows this:

<error>
    <code>wp_die</code>
    <title><![CDATA[WordPress &rsaquo; Error]]></title>
    <message><![CDATA[Error: This is not a valid feed template.]]></message>
    <data>
        <status>404</status>
    </data>
</error>

How do I remove this and get my regular NON Feed page back. I don’t want a feed on this page.

We cannot find this data, content, anywhere on our server. Where is this file and how do I edit/remove the content.

This appeared after installing the plugin.

Thank you.