error messages partial not accepting locals argument?

gistfile1.erb

#this is the view for Users#new

<h1>Sign up</h1>

<%= form_for(@user) do |f| %>
  <%= render 'shared/error_messages', :object => f.object %>
  <%= render 'fields', :f => f %>
	<div class="actions">
		<%= f.submit "Sign up" %>
	</div>
<% end %>

#this is the error partial in shared/error_messages

<% if object.errors.any? %>
  <div id="error_explanation">
    <h2>
      <%= pluralize(object.errors.count, "error") %>
      prohibited this <%= object.class.to_s %> from being saved:
    </h2>
    <p>There were problems with the following fields:</p>
    <ul>
    <% object.errors.full_messages.each do |message| %>
      <li><%= message %></li>
    <% end %>
  </div>
  
<% end %>

gistfile2.erb

undefined local variable or method `object' for #<#<Class:0x00000102067fe0>:0x0000010205c8c0>
Extracted source (around line #1):

1: <% if object.errors.any? %>
2:   <div id="error_explanation">
3:     <h2>
4:       <%= pluralize(object.errors.count, "error") %>