The error occurred FILE_NOT_EXISTS | WordPress.org

Hello, @thompsonaire.

Seems like the file is not there anymore. Please, re-activate the plugin:
• WordPress Admin Page —> Plugins —> Installed plugins —> Security by CleanTalk —> Deactivate and Activate again

And then synchronize it:
• WordPress Admin Page —> Settings —> Security by CleanTalk —> Synchronize with Cloud

Did it help?

Yes that seemed to work. Thank you.