応急処置的だが。 こんなの出る $ gem install rubocop ERROR: Could not find a valid gem 'rubocop' (>= 0), here is why: Unable to download data from https://rubygems.org/ - SSL_connect returned=1 errno=0 state=error: certificate verify failed (https://api.rubygems.or│ g/latest_specs.4.8.gz) updateもできない $ gem update --system ERROR: While executing gem ... (Gem::RemoteFetcher::FetchError) SSL_connect returned=1 errn