Error with categories with limited visibility and/or subcategories

[nbianca (Bianca)]

@Jagster

HasCustomFields::NotPreloadedError (Attempted to access the non preloaded custom field 'sort_topics_by_event_start_date' on the 'Category' class. This is disallowed to prevent N+1 queries.)

This problem was caused by discourse-calendar, but the latest version (soon) of the plugin should fix it:

FIX: Preload category custom fields (#472)

@Jagster

HasCustomFields::NotPreloadedError (Attempted to access the non preloaded custom field 'redirect_url' on the 'Category' class. This is disallowed to prevent N+1 queries.)

This is a problem from discourse-category-lockdown, that we do not have any control over. I can submit a PR to it though.