Could not fetch author data: null value in column "affiliation_country" of relation "journals_cachedauthor" violates not-null constraint DETAIL: Failing row contains (88ca409e-28a1-4752-bbdf-d3b03fff12ff, A5101171159, Liang Yang, Chinese People's Armed Police Force, 20, 437, , 2026-04-11 13:29:15.76324+00, 2026-04-11 13:29:15.763273+00, null, 9, 8, , ["Spine and Intervertebral Disc Pathology", "Cervical and Thorac..., liang-yang-10).