Issue in upgrading OJS 2.4 to OJS 3.x

Hi @masoume_tm,

I’m afraid these questions are more about managing files/backups on your host, not OJS; I’m not familiar with your host and would be worried about providing bad advice. Maybe your host offers a knowledge base that can help you through that part.

Regards,
Alec Smecher
Public Knowledge Project Team

I am facing same issue please suggest

PHP Fatal error: Uncaught Exception: DB Error: Unknown column ‘assoc_type’ in ‘where clause’ Query: UPDATE email_templates SET assoc_type = 530 WHERE assoc_type = ‘526’ in

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