Could not fetch author data: null value in column "affiliation_country" of relation "journals_cachedauthor" violates not-null constraint DETAIL: Failing row contains (20ee7ff8-2903-419a-b849-235eb7aafd6e, A5021832761, B. Senthil Kumaran, Rajalakshmi Engineering College, 12, 7, , 2026-04-19 13:26:54.423465+00, 2026-04-19 13:26:54.423479+00, null, 2, 0, , ["Network Security and Intrusion Detection", "Internet Traffic A..., b-senthil-kumaran).