@torn2 edit the theme template to remove the link to the topic if the user is a guest so they can't get to the topic page.
Sub categories in a list
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I see that on this community sub categories are listed below the main category in a list. How to accomplish this in a custom forum?
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See how it's done in persona here. You need latest master as well.
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I updated persona & composer to the latest version but subcategories doesn't show