templates/rails_app/bin/yarn in railman-1.0.3 vs templates/rails_app/bin/yarn in railman-1.0.4

@@ -2,9 +2,10 @@
 VENDOR_PATH = File.expand_path('..', __dir__)
 Dir.chdir(VENDOR_PATH) do
   begin
     exec "yarnpkg #{ARGV.join(" ")}"
   rescue Errno::ENOENT
-    puts "Yarn executable was not detected in the system."
-    puts "Download Yarn at https://yarnpkg.com/en/docs/install"
+    $stderr.puts "Yarn executable was not detected in the system."
+    $stderr.puts "Download Yarn at https://yarnpkg.com/en/docs/install"
+    exit 1
   end
 end