Homebrew installation failure mac os 10.12.6

[sarah335599]

You are using macOS 10.12.
==> We (and Apple) do not provide support for this old version.
This installation may not succeed.
After installation, you will encounter build failures with some formulae.
Please create pull requests instead of asking for help on Homebrew's GitHub,
Twitter or IRC. You are responsible for resolving any issues you experience
while you are running this old version.

==> This script will install:
/usr/local/bin/brew
/usr/local/share/doc/homebrew
/usr/local/share/man/man1/brew.1
/usr/local/share/zsh/site-functions/_brew
/usr/local/etc/bash_completion.d/brew
/usr/local/Homebrew
==> The following existing directories will be made group writable:
/usr/local/bin
/usr/local/lib
/usr/local/share
/usr/local/share/man
/usr/local/share/man/man1
==> The following existing directories will have their owner set to a1:
/usr/local/bin
/usr/local/lib
/usr/local/share
/usr/local/share/man
/usr/local/share/man/man1
==> The following existing directories will have their group set to admin:
/usr/local/bin
/usr/local/lib
/usr/local/share
/usr/local/share/man
/usr/local/share/man/man1
==> The following new directories will be created:
/usr/local/etc
/usr/local/include
/usr/local/sbin
/usr/local/var
/usr/local/opt
/usr/local/share/zsh
/usr/local/share/zsh/site-functions
/usr/local/var/homebrew
/usr/local/var/homebrew/linked
/usr/local/Cellar
/usr/local/Caskroom
/usr/local/Frameworks
==> The Xcode Command Line Tools will be installed.

Press RETURN to continue or any other key to abort

I have already reinstalled the last version of Mac OS but still runs like with this issue! Please, anyone let me know what should I do. Thanks!