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On 28.07.2014 16:02, Anton Piatek wrote:
> I just upgraded my Ubuntu 12.04 server to 14.04.1 and as part of that
> upgraded trac. I get the following error trying to complete the upgrade
> of trac when running the "trac-admin ... upgrade" command
> 
>     The upgrade failed. Please fix the issue and try again.
>     AttributeError: 
> 
> 
> I have enabled the log and it shows
Smart move. Now you only need to read with an informed eye. So it was
the right thing to post here too.

>     
> "/usr/local/lib/python2.7/dist-packages/TracTags-0.6-py2.7.egg/tractags/model.py",
>     line 23, in environment_needs_upgrade                              
>                                                            if
>     self._need_migration(db):                                          
>                                                                        
>                                                                        
>     File
>     
> "/usr/local/lib/python2.7/dist-packages/TracTags-0.6-py2.7.egg/tractags/model.py",
>     line 47, in _need_migration                                        
>                                                        
>         db.rollback()                                                  

Your version of TagsPlugin [1] is rather old an well-known to be
incompatible with Trac>=1.0. But this is not a problem, because the
issue has been resolved for you months ago and you'll get an even better
plugin by upgrading. Just do it. :-)

Be sure to handle further issues similarly by looking at locally
installed plugins first. I remember that we found a number of plugins
that shared the troublesome upgrade check code, so chances are you have
some of these installed at well.

Sincerely,

Steffen Hoffmann
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