According to Discourse, the problem was caused by the subcategory list on the right hand side when you’re in a particular category. We have temporarily disabled said list until a fix is applied.
Hi Community member!
We discovered an issue where selecting a tag from the top menu’s dropdown filter and from the Tags page would lead to a blank page. We’re currently working with Discourse to resolve this and will update you as soon as possible!
We apologize for any inconvenience this may cause and thank you for your understanding.