mac-dev-setup | 맥 개발환경 초기 설정 저장용 | Runtime Evironment library

I had to get a new hard drive on my Mac and in setting up my developer environment, I'm getting this error/message in the terminal (iTerm2):

-bash: unset: `PATH=/usr/local/opt/icu4c/bin:/usr/local/share/npm/bin:/Users/(mycomputername)/bin:/usr/local/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Users/(mycomputername)/bin': not a valid identifier

From what I've been able to research myself so far, it might be related to installing node using brew. (I could be wrong.)

FYI:

which ruby /usr/bin/ruby

which node /usr/local/bin/node

which python /usr/local/bin/python

Also, I'm using these instructions to set up. I'm aware a few things in this list are out of date:

https://github.com/nicolashery/mac-dev-setup

EDIT:

Contents of ~/.bash_profile: