Mac [HELP] Stardew Valley doesn’t launch

[Baptisst of carrot]

Hi!
Can you help me? What nickname I need to paste in command?
I use this guide:

Run the Terminal application (if you’re not sure how, click the magnifying glass in the top right, type Terminal, and select the first result). In the window that appears, paste in the following line (CHANGE “USER” to your username) and press enter:

sudo chown -v “$USER” ~/.config