Nytrio installation

Hi,

Compilation was fine, but while I’m launching alembic upgrade head the following error is returned and I can’t continue.
“AttributeError: ‘NoneType’ object has no attribute ‘_autoincrement_column'”

If I launch the command again, it complains about a table which already exists.How can I do to fix this error and test this wonderful tool

I didn’t find the right solution from the Internet.

 

References  https://forum.nytrio.com/d/1-nytrio-installation-can-t-create-database-while-launching-alembic-upgrade-head

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