Is it a creepypasta story, a technical error message, or a game walkthrough?
If you are referring to a specific story or digital horror project, it might be related to one of these: File: Helltown.zip ...
A famous urban legend about an abandoned town rumored to be haunted or involved in government cover-ups. Stories often circulate as "leaked" files or documents. Is it a creepypasta story, a technical error
There are several lo-fi horror games titled Helltown (such as the one by WildArts) that deal with cults and 1950s-era mystery. Is it a creepypasta story