http error 418 - Problem Google Ads campaign

We are running a Google Ads campaign and our adverts have been cancelled. It seems our pages can´t be tracked due to "http error: 418"

These are the pages where we are sending traffic from our Google Ad adverts:

https://clinika.es/marketing-clinicas-dentales/
https://clinika.es/

We need to solve the error 418 as we don´t know how to do it ourselves.