Upgrade OJS 2.4.8 to OJS 3.1 failed with PHP Fatal error: Call to a member function getContextId() on null in ReviewAssignment.inc.php on line 517

Software Support
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Hi @juancure

Hmmm… It seems like you have an submission_id in your DB table review_assignments that does not exist in articles :open_mouth:
Could you try this SQL statement on your 2.4.8 DB (using MySQL):

SELECT * FROM review_assignments WHERE submission_id NOT IN (SELECT article_id FROM articles)

Best,
Bozana

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