ActiveRecord::RecordNotFound in Pages#show_qrcode_image

Showing /home/mcse/igtplus_new_data/projects/Rails/podcast3/trunk/app/views/pages/show_qrcode_image.html.haml where line #3 raised:

Couldn't find Page with ID=7949

Extracted source (around line #3):

1: 
2: %h3{:align=> 'center'}
3:   #{ label_tag page.title}
4: 
5: %div{:align=> 'center'}
6:   #{ image_tag page.qrcode_web_path, :class=>'photo', :height=> '400', :width=> '400'}

Rails.root: /home/mcse/igtplus_new_data/projects/Rails/podcast3/trunk

Application Trace | Framework Trace | Full Trace
app/views/pages/show_qrcode_image.html.haml:3:in `_app_views_pages_show_qrcode_image_html_haml__538381692_70332119965460_0'
app/controllers/pages_controller.rb:200:in `show_qrcode_image'
app/middleware/flash_session_cookie_middleware.rb:13:in `call'

Request

Parameters:

{"page_id"=>"7949",
 "locale"=>"zh_tw",
 "id"=>"1986"}

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Response

Headers:

None