I bought a switch today and would like to transfer my Wii U world to the switch, but it doesn't seem to work since the new update… Can anyone help me? Lg
This is only possible if you also have the Legacy Edition of Minecraft for the Switch.
This is no longer available in the eshop since mid-2018 and there's never a physical version of the game.
In short: Unfortunately, you can't broadcast your world.