Cannot access Forums article

Hi,

I have installed Forums and configured it to appear under the following URL:

https://fighterba.se/support

When I go this URL I can see a list of all topics and I can add a topic.

However, when I click on a topic I get a 404 error.

I have 1 topic in my forums and when I click on it the URL the browser is directed to is:

https://fighterba.se/support/?topic=1

But there is no content there.

Any suggestions?