Case C-540/21: Judgment of the Court (Second Chamber) of 8 June 2023 — European Commission v Slovak Republic (Failure of a Member State to fulfil obligations — Package travel and linked travel arrangements — Directive (EU) 2015/2302 — Article 12(2) to (4) — Termination of a package travel contract — Unavoidable and extraordinary circumstances — COVID-19 pandemic — Refund of payments made by the traveller for the package — Refund in the form of a sum of money or in the form of a replacement package tour — Obligation to provide that traveller with a refund not later than 14 days after the relevant contract is terminated — Temporary derogation from that obligation)