Could not fetch author data: null value in column "affiliation_country" of relation "journals_cachedauthor" violates not-null constraint DETAIL: Failing row contains (ae74b6ed-e346-44cd-b776-55e4c299b28f, A5101014470, Shuai Bai, Changchun University of Technology, 60, 2825, 0000-0002-6896-8590, 2026-05-02 12:42:03.651934+00, 2026-05-02 12:42:03.651953+00, null, 21, 29, , ["Multimodal Machine Learning Applications", "Advanced Neural Ne..., shuai-bai).