Sounds like this is in a third party library, however, so I wonder if it's written to work with an earlier version of SQLAlchemy than you have installed? You can either try and fix the third party library, or install the earlier version.
Sounds like this is in a third party library, however, so I wonder if it's written to work with an earlier version of SQLAlchemy than you have installed? You can either try and fix the third party library, or install the earlier version.