Solution - Bundler::HTTPError Could not fetch specs
$ bundle install
Retrying fetcher due to error (2/4): Bundler::HTTPError Could not fetch specs from https://rubygems.org/
Retrying fetcher due to error (3/4): Bundler::HTTPError Could not fetch specs from http://rubygems.org/
Retrying fetcher due to error (4/4): Bundler::HTTPError Could not fetch specs from https://rubygems.org/
Solution: Just restarting your internet will mostly solve this issue.
Written on September 7, 2021