Hi samurai14,
I am Dave, an Independent Advisor, I will help you with this.
That is a known error, it is generated by Cortana.
Open the Settings App, and go to Apps.
Scroll down to find Cortana, select that and click 'Advanced Options'
Reset Cortana form the resulting page.
If that does not stop that popup error, download and re-install Cortana from the Microsoft Store.