Case C-86/19: Judgment of the Court (Fourth Chamber) of 9 July 2020 (request for a preliminary ruling from the Juzgado de lo Mercantil No 9 de Barcelona — Spain) — SL v Vueling Airlines SA (Reference for a preliminary ruling — Air transport — Montreal Convention — Article 17(2) — Liability of air carriers in respect of checked baggage — Fact of loss of checked baggage established — Right to compensation — Article 22(2) — Limits of liability in the event of destruction, loss and delay of, or of damage to, baggage — Absence of information regarding the lost baggage — Burden of proof — Procedural autonomy of the Member States — Principles of equivalence and effectiveness)