Error logs

"/usr/local/rvm/rubies/ruby-2.2.2/bin/ruby" -rrubygems -S "/usr/local/rvm/gems/ruby-2.2.2/gems/rspec-core-3.3.2/exe/rspec" --tty "/home/ubuntu/workspace/hw-sinatra-saas-hangperson/spec/hangperson_game_spec.rb"
/home/ubuntu/workspace/hw-sinatra-saas-hangperson/lib/hangperson_game.rb:38: warning: else without rescue is useless
/home/ubuntu/workspace/hw-sinatra-saas-hangperson/app.rb:3:in `require': /home/ubuntu/workspace/hw-sinatra-saas-hangperson/lib/hangperson_game.rb:33: syntax error, unexpected tIDENTIFIER, expecting keyword_then or ';' or '\n' (SyntaxError)
/home/ubuntu/workspace/hw-sinatra-saas-hangperson/lib/hangperson_game.rb:55: syntax error, unexpected keyword_end, expecting end-of-input
        from /home/ubuntu/workspace/hw-sinatra-saas-hangperson/app.rb:3:in `<top (required)>'
        from /home/ubuntu/workspace/hw-sinatra-saas-hangperson/spec/spec_helper.rb:4:in `require'
        from /home/ubuntu/workspace/hw-sinatra-saas-hangperson/spec/spec_helper.rb:4:in `<top (required)>'
        from /home/ubuntu/workspace/hw-sinatra-saas-hangperson/spec/hangperson_game_spec.rb:1:in `require'
        from /home/ubuntu/workspace/hw-sinatra-saas-hangperson/spec/hangperson_game_spec.rb:1:in `<top (required)>'
        from /usr/local/rvm/gems/ruby-2.2.2/gems/rspec-core-3.3.2/lib/rspec/core/configuration.rb:1327:in `load'
        from /usr/local/rvm/gems/ruby-2.2.2/gems/rspec-core-3.3.2/lib/rspec/core/configuration.rb:1327:in `block in load_spec_files'
        from /usr/local/rvm/gems/ruby-2.2.2/gems/rspec-core-3.3.2/lib/rspec/core/configuration.rb:1325:in `each'
        from /usr/local/rvm/gems/ruby-2.2.2/gems/rspec-core-3.3.2/lib/rspec/core/configuration.rb:1325:in `load_spec_files'
        from /usr/local/rvm/gems/ruby-2.2.2/gems/rspec-core-3.3.2/lib/rspec/core/runner.rb:102:in `setup'
        from /usr/local/rvm/gems/ruby-2.2.2/gems/rspec-core-3.3.2/lib/rspec/core/runner.rb:88:in `run'
        from /usr/local/rvm/gems/ruby-2.2.2/gems/rspec-core-3.3.2/lib/rspec/core/runner.rb:73:in `run'
        from /usr/local/rvm/gems/ruby-2.2.2/gems/rspec-core-3.3.2/lib/rspec/core/runner.rb:41:in `invoke'
        from /usr/local/rvm/gems/ruby-2.2.2/gems/rspec-core-3.3.2/exe/rspec:4:in `<main>'

hangperson.rb

class HangpersonGame

  # add the necessary class methods, attributes, etc. here
  # to make the tests in spec/hangperson_game_spec.rb pass.

  # Get a word from remote "random word" service

  # def initialize()
  # end
  
  attr_accessor :word,:guesses,:wrong_guesses
  
  def initialize(word)
    
    @word = word
    
    @guesses = String.new
    
    @wrong_guesses = String.new
    
    @word_with_guesses = "-"*word.size
  end

  def self.get_random_word
    require 'uri'
    require 'net/http'
    uri = URI('http://watchout4snakes.com/wo4snakes/Random/RandomWord')
    Net::HTTP.post_form(uri ,{}).body
  end
  
  
  def guess letter
    if  @word.include?letter.downcase && @guesses.exclude?letter
      @guesses += letter.downcase
      substitute letter
    else
      @wrong_guesses += letter.downcase
    end
  end
  
  def word_with_guesses 
    @word_with_guesses
  end
  private 
  
  def substitute letter
    for  i in 0...@word.size
      if @word[i] == letter
        @word_with_guesses[i] = letter
      end
    end
    @word_with_guesses
  end
  
end