Upgraded Rails to 6, getting Blocked host Error

Question

I needed the new function in ActiveStorage to resize_to_fill so I upgraded to Ruby 2.5.1 and Rails 6.

ruby \'2.5.1\'

gem \"rails\", github: \"rails/rails\"
         


        

Answer 1

Simple solution:

Add this line to config/environments/development.rb

config.hosts << /[a-z0-9]+\.ngrok\.io/

Restart your rails server and it will work