Case C-79/17: Order of the Court (Eighth Chamber) of 6 September 2018 (request for a preliminary ruling from the Landesverwaltungsgericht Oberösterreich — Austria) — Proceedings brought by Gmalieva s.r.o. and Others Reference for a preliminary ruling — Article 99 of the Rules of Procedure of the Court of Justice — Freedom to provide services — Gambling services — Gambling monopoly in a Member State — National legislation prohibiting the operation of slot machines without prior authorisation from the administrative authorities