Could not fetch author data: null value in column "affiliation_country" of relation "journals_cachedauthor" violates not-null constraint DETAIL: Failing row contains (baa1c0d5-f8b4-4bd2-9eef-cf4142efa414, A5111765094, Zhenghu Zuo, State Key Laboratory of Modern Optical Instruments, 21, 757, , 2026-04-24 03:03:46.615823+00, 2026-04-24 03:03:46.615835+00, null, 14, 17, , ["Multiferroics and related materials", "Magnetic properties of ..., zhenghu-zuo).