Prevent app initialization from failing due to nil array

config/environments/development.rb

@@ -75,6 +75,7 @@ Rails.application.configure do
 
       ip = IPAddr.new(addrinfo.ip_address).mask(24)
       Logger.new(STDOUT).info "Adding #{ip.inspect} to config.web_console.whitelisted_ips"
+      config.web_console.whitelisted_ips ||= []
       config.web_console.whitelisted_ips << ip
     end
   end