Case C-774/19: Judgment of the Court (Sixth Chamber) of 10 December 2020 (request for a preliminary ruling from the Vrhovno sodišče Republike Slovenije — Slovenia) — A. B., B. B. v Personal Exchange International Limited (Reference for a preliminary ruling — Judicial cooperation in civil matters — Regulation (EC) No 44/2001 — Article 15(1) — Jurisdiction over consumer contracts — Concept of ‘consumer’ — Poker playing contract concluded online between a natural person and an organiser of games of chance — Natural person earning a living from online poker games — Knowledge of that person — Regularity of that activity)