hi there i got error when trying to upgrade to ojs 3.1.1-2 from 2.4.8 the error is A database error has occurred: Duplicate entry ‘1881-3-1’ for key ‘review_rounds_submission_id_stage_id_round_pkey’ what should i do to solve this error. tqvm.

Hi @mohd_arshad I think this patch/changes should solve the last problem: pkp/pkp#3783 consider supp files without file id in the migration by bozana · Pull Request #2009 · pkp/ojs · GitHub 2. Do not forget to always restore the clean OJS 2 backup when starting a new upgrade attempt… Best, Bozan…

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Cannot upgrade OJS 2.4.8 to 3.1.1-2

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ctgraham November 16, 2018, 3:55pm 14

Crosslink: Error upgrading from 2.4.8 to 3.1.1: "Invalid file!"