Hmmm, server crashed with error: TypeError at /stream/1000000.25 exception class/object expected file: app.rb location: raise line: 35

404.rb

#!/usr/bin/env ruby
require 'rubygems'
require 'erb'
require 'sinatra'

enable :sessions

$msgs = Array.new

# added a explot guard

helpers do
  def h(text)
    Rack::Utils.escape_html(text)
  end
end

error 404 do
	redirect('/views/404.html')
end

# class Stream
# 	def each
# #		$msgs.each_with_index { |item, index| yield "#{item[0]}<br/>#{item[1]}<br/>#{item[2]}<br/>---------------------------<br\>"}
# 		"<a href='/stream/1'>Go to first stream page!</a>"
# 	end
# end

def page_messages(n)
	n = n.to_i
	s = String.new
	if (n.integer?) and (n>0) and ($msgs.length >= ((n-1) * 10))
		s << (erb :message, :locals => {:n => n, :page => :message,:title => "Page #{n}"})
	else
		raise 404
	end
end

get '/' do
#  draw a form to input message
	erb :notification, :locals => {:title => "Home page."} do
		erb :form
	end
end

post '/post' do
	session[:notification] = (erb :post, :locals => {:time => Time.now}, :layout => false).to_s
	redirect to('/')
end

get '/stream/:page' do
	page_messages(params[:page])
end

# Browse message in array.
get('/stream/?') { redirect to('/stream/1') }