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Christopher Phillips10,061 Points
SSL Certificate Issue
Just wanted to add this as a troubleshoot in case someone else faced it.
I received the following error when I tried installing sinatra via 'gem install sinatra'
ERROR: Could not find a valid gem 'sinatra' (>= 0), here is why: Unable to download data from https://rubygems.org/ - SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed (https://api.rubygems.org/)
It turns out that I was using an older version of Ruby. Updating it and uninstalling the older version fixed the problem.