Fix

The error occurs because the Go binary is not in your system's PATH environment variable. Add the Go bin directory to your PATH and restart your terminal.

export PATH=$PATH:/usr/local/go/bin

To make this change permanent, add the line above to your shell configuration file (~/.bashrc, ~/.zshrc, or ~/.profile) and reload it with source ~/.bashrc (or the equivalent for your shell).

Your computer doesn't know where the Go program is installed. This command tells your system to look in the specific folder where Go lives. It's like adding a new street to your GPS so it can find a house it didn't know about before.