New site – first post – error 404

Hi –

Fairly new to this. Struggling to get my first post up at https://www.jamesbywood.co.uk

The url for my first post attempt is https://www.jamesbywood.co.uk/http:/www.jamesbywood.co.uk/about
As you will see this doesn’t exist, getting an Error 404.

This is the url that WordPress gives to the post. I have deleted and tried multiple posts, they all get the same url and result in the same error.

Let me know your thoughts