Setup SDK
Before redeeming your code, make sure your computer has dfx installed. See documentation for install instructions.
Also, make sure that you are running at least version 0.22.0 of dfx.
dfx 0.22.0
If your dfx version is below 0.22.0, please run dfxvm update.
[...]
info: installed dfx 0.22.0
info: set default version to dfx 0.22.0