Why I’m getting 404 – Page Not Found error after uninstalling the app?

I uninstalled the Under Construction app, but the page still exists or displays a 404 error. How can I fix this?

First of all, don’t be panic whenever you face this error on your website.

Go to Online Store > Themes, and go to “Edit code“.

The residual code may be found in “theme.liquid” before tag – {% include ‘under-construction’ %}

Once this code is removed, the coming soon page and the error should no longer appear.