Hey there @Wolfeius! Welcome to the community! @penboack is right on the money! This error often stems from the actual plugin itself not being installed to the engine version of your choice. You can remedy this by opening your Epic Games Launcher, heading over to library, then scroll down to your vault, search for it here and then add it to the version of the engine you’re currently using.
If this doesn’t correct it, we may have to verify the installation of the plugin itself.