TextField error

[darker0n]

Error while I'm using this File Admin example -> https://github.com/syrusakbary/Flask-SuperAdmin/blob/master/doc/quickstart.rst#file-admin

19:04:42 web.1  |   File "/home/darker0n/workspace/test/test/views/admin.py", line 5, in <module>
19:04:42 web.1  |     from flask.ext.superadmin.contrib.fileadmin import FileAdmin
19:04:42 web.1  |   File "/usr/local/lib/python2.7/dist-packages/flask/exthook.py", line 62, in load_module
19:04:42 web.1  |     __import__(realname)
19:04:42 web.1  |   File "/usr/local/lib/python2.7/dist-packages/flask_superadmin/contrib/fileadmin.py", line 20, in <module>
19:04:42 web.1  |     class NameForm(form.BaseForm):
19:04:42 web.1  |   File "/usr/local/lib/python2.7/dist-packages/flask_superadmin/contrib/fileadmin.py", line 26, in NameForm
19:04:42 web.1  |     name = wtf.TextField()
19:04:42 web.1  | AttributeError: 'module' object has no attribute 'TextField'