> For the complete documentation index, see [llms.txt](https://docs.dclwp.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.dclwp.com/general/fatal-error-on-activation.md).

# Fatal error on activation

If you encounter a fatal error on plugin activation, that means you are running an oldest version of the plugin, which can not work when official Disqus comments plugin is already active.

Deactivate official plugin or update to the latest version of our plugin. Latest version of Disqus Conditional Load can work even when the official plugin is active.