site upgrade from 3.0.20 to 4.0.2 fails with AttributeError: 'module' object has no attribute 'SubfieldBase'

[harish.va...@gmail.com]

Hi,

We were able to successfully have rb-site 4..0.2 installed.

# which rb-site

/usr/bin/rb-site

# rb-site --version

Review Board/rb-site 4.0.2

Python 2.7.5 (default, Nov 20 2015, 02:00:19) 

Installed to /usr/lib/python2.7/site-packages/ReviewBoard-4.0.2-py2.7.egg/reviewboard

But, when we are trying to upgrade the site using rb-site upgrade, from the current site version 3.0,20, we are getting the below error.

  File "/usr/lib64/python2.7/importlib/__init__.py", line 37, in import_module

    __import__(name)

  File "/usr/lib/python2.7/site-packages/ReviewBoard-4.0.2-py2.7.egg/reviewboard/notifications/models.py", line 8, in <module>

    from multiselectfield import MultiSelectField

  File "/usr/lib/python2.7/site-packages/multiselectfield/__init__.py", line 1, in <module>

    from multiselectfield.db.fields import MultiSelectField

  File "/usr/lib/python2.7/site-packages/multiselectfield/db/fields.py", line 135, in <module>

    MultiSelectField = add_metaclass(models.SubfieldBase)(MultiSelectField)

AttributeError: 'module' object has no attribute 'SubfieldBase'

Can anyone please help let know on how to address this.

Thanks.

[Christian Hammond]

Can you run:

    pip show django-multiselectfield 

And tel me what version it shows?

If it’s not 0.1.12, try upgrading it.

We’ll include a fix for this week’s release to ensure the right version is always installed.

Christian

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[harish.va...@gmail.com]

Hi Christian,

Thanks for the inputs.

Yes, the version was the issue and upgrading it helped solve the issue.

Have a different issue starting the httpd server and will post it as a separate thread so that its easier to track.

Thanks.