Could not fetch author data: null value in column "affiliation_country" of relation "journals_cachedauthor" violates not-null constraint DETAIL: Failing row contains (6565fcd7-d7d3-496f-ae12-9bf0023288ee, A5089888297, John D. Mertens, Hartford Financial Services (United States), 20, 616, , 2026-04-16 06:27:15.413339+00, 2026-04-16 06:27:15.413351+00, null, 12, 14, , ["Advanced Combustion Engine Technologies", "Spectroscopy and La..., john-d-mertens).