Im trying to downgrade to a lower version however I keep getting this error

copy and paste maybe you typed it wrong? download_depot 1721470 1721471 8897518061680100138

Nope,, no change in error

My guess is you don't have the game in your library or you don't have enough space for it.

If you get this error, it's because your Steam client needs to update to the latest version.
Click Steam -> Check for Steam Client Updates and check under Help -> About Steam, the Steam package version should be 1373418487 or higher.

Briefly disable any Anti-Virus or Firewall programs that might interfere with the Steam client update process.
(https://steamcommunity.com/discussions/forum/1/864973123454987057/)

Thanks

I remember that thread when it just got posted lol