add cable but not complete

config/environments/development.rb

@@ -51,4 +51,7 @@ Rails.application.configure do
   # Use an evented file watcher to asynchronously detect changes in source code,
   # routes, locales, etc. This feature depends on the listen gem.
   config.file_watcher = ActiveSupport::EventedFileUpdateChecker
+
+  # Set Cable URL
+  config.action_cable.url = "ws://192.168.1.140:3002/cable"
 end