Could not fetch author data: null value in column "affiliation_country" of relation "journals_cachedauthor" violates not-null constraint DETAIL: Failing row contains (5982d58d-dfd0-4676-a3fd-1045ba4154c0, A5011193859, Jiejun Zeng, Changchun University of Technology, 10, 335, 0009-0000-1773-2863, 2026-04-24 05:43:33.503821+00, 2026-04-24 05:43:33.503838+00, null, 8, 7, , ["Perovskite Materials and Applications", "Quantum Dots Synthesi..., jiejun-zeng).