SQLAlchemy generates this error for a good reason, however it is less
typical when using the ORM Session.    Would need at least a stack
trace to have any idea what is happening for you.

On Wed, Mar 7, 2018 at 7:31 AM, Erol Merdanović <zasebn...@gmail.com> wrote:
> Hello
>
> I'm using latest sqlalchemy (this was also occurring with 1.1.x branch) with
> flask and flask-sqlalchemy. For some reason I'm randomly getting this error.
>
> 1. Checking the group there were similar problems but some mentioned that
> problem is with database going away
> 2. Others mentioned that session is not correctly started/closed. As
> mentioned, I'm using flask-sqlalchemy.
>
> Is anyone else experiencing same problem? Any tips how to approach this? Is
> this flask-sqlalchemy problem?
>
> --
> SQLAlchemy -
> The Python SQL Toolkit and Object Relational Mapper
>
> http://www.sqlalchemy.org/
>
> To post example code, please provide an MCVE: Minimal, Complete, and
> Verifiable Example. See http://stackoverflow.com/help/mcve for a full
> description.
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-- 
SQLAlchemy - 
The Python SQL Toolkit and Object Relational Mapper

http://www.sqlalchemy.org/

To post example code, please provide an MCVE: Minimal, Complete, and Verifiable 
Example.  See  http://stackoverflow.com/help/mcve for a full description.
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