Could not fetch author data: null value in column "affiliation_country" of relation "journals_cachedauthor" violates not-null constraint DETAIL: Failing row contains (b6f5d811-7995-4c21-be7c-ad9b4b233749, A5012897046, Ammar Ali Hamza, Imam Ja’afar Al-Sadiq University, 3, 32, , 2026-04-12 13:48:05.745806+00, 2026-04-12 13:48:05.745817+00, null, 2, 2, , ["COVID-19 Clinical Research Studies", "2D Materials and Applica..., ammar-ali-hamza).