Here's workaround
Download and install an old version of launcher 10.19.2
https://www.epicgames.com/store/en-US/download
Waiting for the launcher to open, when you see your name then immediately shut down it through the task manager so the launcher does not download the updates completely. Then right-click on the shortcut, choose properties and add -noselfupdate after the text: ".........Binaries\Win32\EpicGamesLauncher.exe " -noselfupdate
Not my solution as I got the load error you were talking about. Comes from leakforums.co