None in URL resulting to 404 Page

I have a problem I’ve been trying to figure out for a while. I have created a course on studio and published it to view the live version but I get a 404 on viewing the live preview. The course also appears on the LMS but when a student veiws the course, it’s still a 404. I’ve noticed that the urls have None in between :-

I used tutor to deploy the site.
Please help on this, I’d really appreciate.

Please ask questions in only one location. I have answered here: 404 when viewing course and None in URL