How to fix my load errors?

I wanna fix this problem,but did’t konw how,and i don’t konw why.
so what’s the reason to cause this problem?and how can i fix this problem?

First thing I would try is to fix up redirectors.

Also. If this is a Blueprint only project, you could always migrate all your content to a new blank one.

I try to fix up redirectors,but it doesn’t work.
So should i create a new project,then migrate all my content to this new project?