How to Enable Ruby Support in Plesk Onyx
Enable Ruby for your Web Site
To enable Ruby for your web site, go to Websites & Domains > Ruby and click Enable Ruby.
for more info please see – https://docs.plesk.com/en-US/onyx/customer-guide/ruby-support-linux/manage-ruby-applications.76554/
Deepak Goel Answered question 21 Nov, 2023