message: Sorry, but you are looking for something that isn't here. Updated

When I click on an event in the widget,
I am getting message:
‘Not Found
Sorry, but you are looking for something that isn’t here.’

on https://www.beestontoday.com/

The view calendar button goes into the calendar and works fine, but clicking an event in the widget goes wrong
any ideas ?

It is because I have changed the wordpress address and site address in the WP general settings
from https://www.beestontoday.com/
https://www.18weeks.net/beestontoday
because I started using the registered the domain name

regards

https://www.ads-software.com/extend/plugins/all-in-one-event-calendar/