Some of my files went corrupt

When i hover above example the edgraphpin_155671 it says “none”.
I deleted some stuff in the editor and some of them were on the hard drive still.

This might be the cause for that im not able to cast the player controller to myplayercontroller. (its player controller’s child)

Its gone. I restarted the engine 3 times and now i have only 3 errors.