Uncaught TypeError: Type is not a function

http://localhost:8069/web/content/668-631f54a/web.assets_backend.js:3457
Traceback:
TypeError: Type is not a function
    at for_ (http://localhost:8069/web/content/668-631f54a/web.assets_backend.js:3457:1176)
    at http://localhost:8069/web/content/668-631f54a/web.assets_backend.js:3375:263
    at Function._.map._.collect (http://localhost:8069/web/content/665-2f53049/web.assets_common.js:13:270)
    at _.(anonymous function) [as map] (http://localhost:8069/web/content/665-2f53049/web.assets_common.js:69:526)
    at OdooClass.View.extend.setup_columns (http://localhost:8069/web/content/668-631f54a/web.assets_backend.js:3375:212)
    at OdooClass.View.extend.load_list [as _super] (http://localhost:8069/web/content/668-631f54a/web.assets_backend.js:3364:1190)
    at OdooClass.ListView.include.load_list (http://localhost:8069/web/content/668-631f54a/web.assets_backend.js:3170:107)
    at OdooClass.<anonymous> (http://localhost:8069/web/content/665-2f53049/web.assets_common.js:2535:371)
    at OdooClass.ListView.include.load_list (http://localhost:8069/web/content/668-631f54a/web.assets_backend.js:3731:1094)
    at OdooClass.load_list (http://localhost:8069/web/content/665-2f53049/web.assets_common.js:2535:371)



in that i have not write type anywhare in the file .


see image
http://www.awesomescreenshot.com/image/844573/f6acb21d62a13b42b4f6f0da302147bd