Why does my editor show me a blackscreen when i press play?

I accidentally delted my main charater blueprint yesterday but was able to recover it in the backups. But today when i tried to press the play button in the deitr to preview my game it only shows me a black screen.I haventy done any changes since i recoverd my character and cant figure out why it wont wokr. Im very new to unreal 4 and need help.

Check the gamemode settings. Since you deleted your character, there is a good chance it also got deleted from your gamemode as the default character, since blueprints cannot hold values that don’t exist.

If you start a game without any default character setup of your own, the game will default back to a first person character and chances are good that character’s camera got stuck somewhere that makes it seem you got a black screen.