"No such file or directory @ rb_sysopen" using OpenURI

Try to write require 'open-uri' before your code.

I am using Ruby 3.0.1 and a part from the:

require "open-uri"

I have to explicitly call URI.open instead of just open:

data = URI.open("http://google.ca/")

Maybe it is something on new Ruby versions

CodeHunter