installation

I followed this tutorial on modding the game (https://youtu.be/BkohJW_TFRg?si=SxVne_pg0GMZPQv9) and got stuck in the smapi installation process. After I picked to install on Windows and pressed 1 (to do it via Steam right away) and 1 again to install it, this error showed up. I tried typing it...

If anyone knows a way to do this, please show us how. The reason that this would be cool for me is that I am currently playing the game with several mods on Windows 10 that might not work once the game is updated to 1.6. Furthermore, some of the Mods that I am playing with now have been...