Unistall ojs 3.1

I’m doing the installation of ojs 3.1 on version 3.0 of the ojs and it throws me error.

→ Se ha producido un error en la base de datos: ERROR: no existe el tipo «serial»


Hi @proyrevistas,

See e.g. this thread.

Alec Smecher
Public Knowledge Project Team

I’m going to review it, thank you very much.