Collision with plugin Code Snippets

Hello,
when I’ve installed plugin Code Snippets by Code Snippets Pro (ver 3.4.0) and I have your plugin in version 5.3.4. There is colision between these plugins. I don’t know where is the problem. I’ve tryed disable all snippets. But only what can I do is disable the plugin. Collision looks like… When i’ve tryed to go to example.com/sitemap.xml I have only information about Internal Server Error with code 500. But I’ve wanted to find something more. (I’ve disabled all filters, .htaccess things etc.). And I’ve used to google to find the solution, but I didn’t find nothing.
So can you find where is the problem between your plugin and other plugin? Thank you very much.