Thank your for all the info, i actually have seen that you tube video.
Just by removing the fab content and just restarting uefn, everything comes back, including fornite assets themselves.
I have searched and searched what the cause could be as to why this happening the moment you add fab content.
The whole issue is lying there, and this was not a issue at all before the last update in January.
So whatever they have done within that update has completely messed that up! Cause yeah indeed, even opening opening up on of your published projects with fab content is now at risk. And yet, epic still doesnt think this is a issue/problem at all and will close off every single thread i have seen of people i have seen with the same issue. yeah or just remove your fab content and you should be good to go. But we bloody paid for it, and can not use it at all. And nothing is being done about it, it is a complete money scam now for people to purchase the vault fab content and migrated from unreal engine, which also comes with its own issues!
And yeah i can not say this enough, epic still does not see a problem here!
This all started in January, it is bloody April now.