Joined Cases C-140/19, C-141/19 and C-492/19 to C-494/19: Order of the Court (Sixth Chamber) of 19 December 2019 (requests for a preliminary ruling from the Landesverwaltungsgericht Steiermark — Austria) — EX EX (C-140/19 and C-141/19), OK (C-492/19), PL (C-493/19), QM (C-494/19) v Bezirkshauptmannschaft Hartberg-Fürstenfeld (Reference for a preliminary ruling — Article 53(2) and Article 99 of the Rules of Procedure of the Court of Justice — Freedom to provide services — Posting of workers — Article 56 TFEU — Directive 2014/67/EU — Articles 9 and 20 — Reporting of workers — Retention of records of wages — Penalties — Proportionality — Fines of a predefined minimum amount — Cumulative — No upper limit — Court fees — Manifest inadmissibility)