Annoying "Choose Application" Popup

I recently upgraded from a Late 2013 MacBook Pro to a new Mid 2018 model. A clean install had gotten rid of a lot of issues, except for one...an annoying popup whenever I open a rule. A screenshot is below.
I've tried to navigate to Hazel in the PreferencePanes folder to select HazelHelper; however, Hazel.prefPane is grayed out.
Any assistance anyone can provide to suppress this popup will be greatly appreciated...

I've tried to navigate to Hazel in the PreferencePanes folder to select HazelHelper; however, Hazel.prefPane is grayed out.
Any assistance anyone can provide to suppress this popup will be greatly appreciated...