Joined Cases C-354/20 PPU and C 412/20 PPU: Judgment of the Court (Grand Chamber) of 17 December 2020 (requests for a preliminary ruling from the Rechtbank Amsterdam — Netherlands) — Execution of European arrest warrants issued in respect of L (C-354/20 PPU), P (C-412/20 PPU) (Reference for a preliminary ruling — Urgent preliminary ruling procedure — Police and judicial cooperation in criminal matters — European arrest warrant — Framework Decision 2002/584/JHA — Article 1(3) — Article 6(1) — Surrender procedures between Member States — Conditions for execution — Charter of Fundamental Rights of the European Union — Second paragraph of Article 47 — Right of access to an independent and impartial tribunal — Systemic or generalised deficiencies — Concept of ‘issuing judicial authority’ — Taking into consideration of developments after the European arrest warrant concerned has been issued — Obligation of the executing judicial authority to determine specifically and precisely whether there are substantial grounds for believing that the person concerned will run a real risk of breach of his or her right to a fair trial if he or she is surrendered)