Cannot install watchman from homebrew

Question

I just started developing apps using react native. When I tried to set up, I downloaded homebrew successfully, but I cant install watchman or node using the following command:

brew install node

brew install watchman

This is the result I have:

==> Searching for similarly named formulae...
Error: No similarly named formulae found.
Error: No available formula or cask with the name "watchman".
==> Searching for a previously deleted formula (in the last month)...
Error: No previously deleted formula found.
==> Searching taps on GitHub...
Error: No formulae found in taps.

Does anyone know how to fix this?

Answer 1

rm -rf /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core; brew update

I had same Issue recently this solved to me

Answer 2

1. brew doctor

2. git -C $(brew --repo homebrew/core) checkout master