Joined Cases C-174/17 P and C-222/17 P: Judgment of the Court (First Chamber) of 13 December 2018 — European Union, represented by the Court of Justice of the European Union v Plásticos Españoles SA (ASPLA), Armando Álvarez, SA, European Commission (C-174/17 P), Plásticos Españoles, SA (ASPLA), Armando Álvarez, SA v European Union, represented by the Court of Justice of the European Union, European Commission (C-222/17 P) (Appeal — Actions for damages — Second paragraph of Article 340 TFEU — Excessive duration of the proceedings in two cases before the General Court of the European Union — Compensation for damage allegedly suffered by the applicants — Material damage — Bank guarantee charges — Causal link — Default interest)