Case C-587/17 P: Judgment of the Court of Justice (Fourth Chamber) of 30 January 2019 — Kingdom of Belgium v European Commission (Appeal — European Agricultural Guarantee Fund (EAGF) — Regulation (EC) No 1290/2005 — Regulation (EU) No 1306/2013 — Expenses excluded from financing by the European Union — Unduly paid export refunds — Recovery — Not all judicial remedies were exhausted — No appeal on a point of law following the negative opinion of a lawyer authorised to act before the Cour de cassation (Belgium) — Article 267 TFEU — No reference for a preliminary ruling to the Court of Justice — Negligence on the part of a Member State)