Sims 4 on Steam not launching - error message link2ea://launchgame

I tried both. The only thing that changes is the heading of the error message.

When I don't have Origin running when I start to launch the game, the header of the error window shows this:

When I do have Origin running, the header of the error window has quite a lot more letters and numbers in it:

So I tried to go into the Sims 4 install folder and just start the game with the .exe.

I went into J:\Games\SteamLibrary\steamapps\common\The Sims 4\Game\Bin and double-clicked the TS4_x64.exe

This is not my screenshot, btw, since for some reason my screen capturing program doesn't grab this error window. But it looks pretty much exactly the same, except for where it says "Activation" at the top left, it says "The Sims (TM) 4".