I managed to fix this on my computer by removing the webcache folder in the appdata folder and letting the epic launcher rebuild it.
So follow these steps:
- Exit Epic Launcher
- Browse to C:\Users\MYUSERNAME\AppData\Local\EpicGamesLauncher\Saved\
- Delete the webcache folder
- Launch Epic Launcher and all ok…
Goodluck
/Balmarky
Feel free to thank me by carrying me to a victory royale