Case C-949/19: Judgment of the Court (First Chamber) of 10 March 2021 (request for a preliminary ruling from the Naczelny Sąd Administracyjny — Poland) — M.A. v Konsul Rzeczypospolitej Polskiej w N. (Reference for a preliminary ruling — Border controls, asylum and immigration — Visa policy — Convention implementing the Schengen Agreement — Article 21(2a) — Charter of Fundamental Rights — Article 47 — Right to an effective remedy — Refusal of a long-stay visa by the consul — Obligation on a Member State to guarantee a remedy before a tribunal against a decision refusing such a visa)