CodeAccademy is dreadful please help

I have had this error for hours I cant fix it

C:/RailsInstaller/Ruby2.3.0/lib/ruby/2.3.0/net/http.rb:933:in connect_nonblock': SSL_connect returned=1 errno=0 state=error: certificate verify failed (OpenSSL::SSL::SSLError) from C:/RailsInstaller/Ruby2.3.0/lib/ruby/2.3.0/net/http.rb:933:in connect' from C:/RailsInstaller/Ruby2.3.0/lib/ruby/2.3.0/net/http.rb:863:in do_start' from C:/RailsInstaller/Ruby2.3.0/lib/ruby/2.3.0/net/http.rb:858:in start' from hello.rb:36:in `<main>'

The code works on code accademy enviroment but not on my pc please help.