Googlebot couldn't crawl

Hi
I first thank you for writing and give it a plug
There was a point I wanted to raise is too good to give it more of a plugin
With this plugin by Google, and Google does not crawl to check this message

Googlebot couldn’t crawl this URL because it points to a non-existent page. Generally, 404s don’t harm your site’s performance in search, but you can use them to help improve the user experience.

https://www.donyayekhodro.com/?p=6782&emailpopup=1

Thanks
Houshmand Amini

https://www.ads-software.com/plugins/wp-email/