Could not fetch author data: null value in column "affiliation_country" of relation "journals_cachedauthor" violates not-null constraint DETAIL: Failing row contains (f109e202-a30c-4254-8581-314e9b3df839, A5073614894, Nigel Williams, NHS England, 634, 49547, 0000-0003-1177-6931, 2026-04-17 20:26:09.839071+00, 2026-04-17 20:26:09.839086+00, null, 87, 244, , ["Genetic Associations and Epidemiology", "Parkinson's Disease M..., nigel-williams-1).