[Error Message] always redirect to http://localhost

[Dragonnest]

I have a problem with my mybb on localhost, when I make a post it always redirects to http://localhost instead of http://localhost/mybb/, I've made changes to the configuration but still can't.

[noyle]

Will you test it again in the incognito/private mode?

[Michael2014]

board url is not http://localhost, but actual domain name like

https://example.com