Could not fetch author data: null value in column "affiliation_country" of relation "journals_cachedauthor" violates not-null constraint DETAIL: Failing row contains (b214189e-52e1-471c-b988-9c4d1af055b9, A5046221985, Yangkai Sun, State Key Laboratory of Clean Energy Utilization, 14, 524, , 2026-04-08 08:39:19.854481+00, 2026-04-08 08:39:19.854496+00, null, 9, 9, , ["Supercapacitor Materials and Fabrication", "Advancements in Ba..., yangkai-sun).