Hi Park,
Unfortunately, we have no clue.
As this issue is related with a feature of BuddyPress Doc plugin, it’s best if you try to reach the plugin authors. Moreover, this code was certainly made by BuddyPress Doc team. They will be more informed and better suited to help you with their plugin.
To go further, we invite you to post your request on their support forums: BuddyPress Doc support
Don’t hesitate to share the solution with us. I’m sure it will help other users facing the same issue. By doing this, you will be making a great contribution to this forum, and we thank you very much for that! #SharingIsCaring 💪🏻
We remain available for all support requests related with the use of your theme.
Best,