正在取得檔案路徑.../Library/Ruby/Gems/2.6.0/gems/http-5.0.4/lib/http/timeout/null.rb:21:in `initialize': failed to connect: No route to host - connect(2) for "reader.readmoo.com" port 443 (HTTP::ConnectionError)
from /Library/Ruby/Gems/2.6.0/gems/http-5.0.4/lib/http/timeout/null.rb:21:in `open'
from /Library/Ruby/Gems/2.6.0/gems/http-5.0.4/lib/http/timeout/null.rb:21:in `connect'
from /Library/Ruby/Gems/2.6.0/gems/http-5.0.4/lib/http/connection.rb:42:in `initialize'
from /Library/Ruby/Gems/2.6.0/gems/http-5.0.4/lib/http/client.rb:70:in `new'
from /Library/Ruby/Gems/2.6.0/gems/http-5.0.4/lib/http/client.rb:70:in `perform'
from /Library/Ruby/Gems/2.6.0/gems/http-5.0.4/lib/http/client.rb:31:in `request'
from /Library/Ruby/Gems/2.6.0/gems/http-5.0.4/lib/http/chainable.rb:20:in `get'
from /Users/chrifs/Desktop/readmoo-dl-master/lib/readmoo_dl/API.rb:11:in `fetch'
from /Users/chrifs/Desktop/readmoo-dl-master/lib/readmoo_dl/downloader.rb:43:in `fetch_base_file'
from /Users/chrifs/Desktop/readmoo-dl-master/lib/readmoo_dl/downloader.rb:24:in `block in download'
from /Users/chrifs/Desktop/readmoo-dl-master/lib/readmoo_dl/downloader.rb:38:in `job'
from /Users/chrifs/Desktop/readmoo-dl-master/lib/readmoo_dl/downloader.rb:24:in `download'
from main.rb:19:in `<main>'
/Library/Ruby/Gems/2.6.0/gems/http-5.0.4/lib/http/timeout/null.rb:21:in `initialize': No route to host - connect(2) for "reader.readmoo.com" port 443 (Errno::EHOSTUNREACH)
from /Library/Ruby/Gems/2.6.0/gems/http-5.0.4/lib/http/timeout/null.rb:21:in `open'
from /Library/Ruby/Gems/2.6.0/gems/http-5.0.4/lib/http/timeout/null.rb:21:in `connect'
from /Library/Ruby/Gems/2.6.0/gems/http-5.0.4/lib/http/connection.rb:42:in `initialize'
from /Library/Ruby/Gems/2.6.0/gems/http-5.0.4/lib/http/client.rb:70:in `new'
from /Library/Ruby/Gems/2.6.0/gems/http-5.0.4/lib/http/client.rb:70:in `perform'
from /Library/Ruby/Gems/2.6.0/gems/http-5.0.4/lib/http/client.rb:31:in `request'
from /Library/Ruby/Gems/2.6.0/gems/http-5.0.4/lib/http/chainable.rb:20:in `get'
from /Users/chrifs/Desktop/readmoo-dl-master/lib/readmoo_dl/API.rb:11:in `fetch'
from /Users/chrifs/Desktop/readmoo-dl-master/lib/readmoo_dl/downloader.rb:43:in `fetch_base_file'
from /Users/chrifs/Desktop/readmoo-dl-master/lib/readmoo_dl/downloader.rb:24:in `block in download'
from /Users/chrifs/Desktop/readmoo-dl-master/lib/readmoo_dl/downloader.rb:38:in `job'
from /Users/chrifs/Desktop/readmoo-dl-master/lib/readmoo_dl/downloader.rb:24:in `download'
from main.rb:19:in `<main>'
No route to host - connect(2) for "reader.readmoo.com" port 443 (HTTP::ConnectionError)
Based on this I believe it is blocked by GFW, if not please check your internet.