sqlalchemy error on launch

[Stuartacus]

After launch I am getting:
OperationalError

sqlalchemy.exc.OperationalError no such table METS.

I think I have followed the Readme carefully, is there something I have missed?

[tw4l]

Hi @Stuartacus! It looks to me like the ./db_create.py probably didn't run successfully - can you try again and share whatever output or errors you get here?

[Stuartacus]

Sorry for the delay, been very busy, it looks like it is because there is no UserDict module for Python3, should collections.MutableMapping be used instead?

Thanks, Stuart