Diagraphephobia

Diagraphephobia is the fear of being deleted. Believing that you are living inside a video game or computer simulation, and being afraid that you are going to get deleted from existence. Also applies to the fear of having your important documents, photos, or other files deleted and living as a file. photo. or a document inside a computer.

Trivia

 * Despite having it's namesake related to a song in the Wii Deleted You Friday Night Funkin mod, Diagraphephobia does not have any correlation to Friday Night Funkin' or the Wii Deleted You creepypasta, other than the song going by the same name.