What I can do by this Bug/Error
Hi You need to report this at
How to submit a bug report in Fortnite - Fortnite Support (epicgames.com)
Thank you for your report! Can you please re-post using the “New Issue” option on the Issues and Bug Reporting forums? Posts with this feature are connected directly into our development team so we can quickly get to them!
For more information, such as how to get the reference ID, please check out the article here: Using the Creative and UEFN Bug Reporting Form