Could not fetch author data: null value in column "affiliation_country" of relation "journals_cachedauthor" violates not-null constraint DETAIL: Failing row contains (a0ee0eb0-17d8-41d3-8794-eb9f8583fd94, A5108636369, Hualing Ma, PetroChina Southwest Oil and Gas Field Company (China), 10, 328, , 2026-04-18 10:16:17.340116+00, 2026-04-18 10:16:17.340133+00, null, 3, 2, , ["Hydrocarbon exploration and reservoir analysis", "Geological a..., hualing-ma).