I found a problem while I upgrade OJS. The error code shown below.
- A database error has occurred: SQLSTATE[42S21]: Column already exists: 1060 Duplicate column name ‘email_id’ (SQL: ALTER TABLE email_templates_data ADD email_id BIGINT)
I found a problem while I upgrade OJS. The error code shown below.
Is this the first attempt to upgrade, or was there an interrupted attempt, and you tried again without restoring the database backup?
Also, are you upgrading from which OJS version?