Fortnite EpicGames Launcher error message?

Also, the following happened to me:

I just updated Fortnite. And then my PC is frozen (happens more often, is not the topic here.) Probably the cooler paste on the CPU is too little.). Rebooted it, and then this error message came:

I then clicked on the link below, and on the page I was directed to, I should look for my most recent Launcher Log in C: \ Users [yourusernamehere] \ AppData \ Local \ EpicGamesLauncher \ Saved \ Logs and in this again for a text that means:

FCommunityPortalLaunchAppTask: Failed to launch app, file not found.

He was not there, as far as I've seen it now. What now?

By the way, can one somehow search for the text, so enter it and then find it? Or marked? (Was that German? XP)

And no, I have not entered [your username here].

Try copying the Fortnite folder into another directory then the normal folder that you have copied so delete the old directory and then in the Epic Games Launcher if you press install the new path.

There's no Fortnite folder; -;