I have no idea why this is happening, but if I'm placing the [wpforo] shortcode on my page, the page can't be loaded anymore. I deactivated already every plugin and my theme, but those weren't the issue. I'm not a pro at something like this, but Firefox is giving those errors: https://ibb.co/9hvLxYw
Forum Basic URL is still basic and i tried it using the test page which wpforo created, so i didn't change anything there
At the Debug page (forum > tools > debug) is only one error: WordPress Email sending function wp_mail() doesn't work!, but i don't think this is doing something or?
The last information: On the wp-admin page is everything working fine, except the Forum > settings > Style & API page are giving an error, too.
If you want the link of the page or something, i can't give it to you, because it's still only local.
EDIT: I even tried reinstalling ...
Please let me know how many pages with [wpforo] shortcode you have.
Have you enabled the mod_rewrite module of Apache?
And do set SEO friendly permalinks in Dashboard > Settings > Permalinks admin page?
Also, please navigate to Dashboard > Forums > Settings > General Tab and click on [Update options] button.
Then delete all caches and check it again.
1. I just have one page.
2. Yes it is enabled
3. I'm not sure what a "SEO friendly" permalink is, but i'm using the /TopicName (for the example page it would be /forum
4. Update Button -> Yes i have tried it already (deleting cache after, too), but didn't work. I was reading already such post in this Forum, but nothing helped.
Please leave your forum URL and some screenshot of your Permalink settings.
I'm sorry but we can't help to fix such issues on localhost. This maybe localhost configuration issue. Please read the forum requirements: https://wpforo.com/docs/root/wpforo-installation/server-requirements/
We'll start helping you once you upload this WordPress installation to online hosting and make it available in web.