Cant calculate project size = invalid_json

Summary

Hi, one day everything was fine my project memory was showing 63% in viewport

The 18/05/2026, my project size was “???”

When i try to build the size it returns me

LogValkyrie: Display: ProjectSizeRequest::CancelFlow for b74cba2f-4493-1072-060d-fd8816e8b03e - invalid_json

I opened other projects to check if it will correct, deleted the CachedAssetRegistry, validated every assets in my project and i still get the same issue

I can launch my project and go in edit mode but it only shows me an “older” cached version of my project and ofc any changes i make doesnt reflect in the session regardless of my endless “push changes”

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Project Size

Steps to Reproduce

cant reproduce

Expected Result

cant reproduce

Observed Result

cant reproduce

Platform(s)

PC

Island Code

My map is not published