Google stopped crawling / indexing my blog pages

Hi everyone

I am new here and thank you in advance for your help!

I have been running a blog on our accountancy website for a few months, and up until a few weeks ago my blog posts we searchable within google.

However, I think since I enabled the search friendly URLS, ironically google has stopped listing my individual blog pages?

For example, if you google “Reporting Company Cars to H M Revenue & Customs” smith emmerson, you will see that it finds the post in the categories and blog overview page, but not the page https://www.smithemmerson.co.uk/Blog/index.php/uncategorized/form-p46-car-reporting-company-cars-to-h-m-revenue-customs/

Any body help me with why this is please?

Thank you for your time

Rob Mason