Opinion of Advocate General Campos Sánchez-Bordona delivered on 7 March 2019.#Meca Srl v Comune di Napoli.#Request for a preliminary ruling from the Tribunale Amministrativo Regionale della Campania.#Reference for a preliminary ruling — Public procurement — Directive 2014/24/EU — Article 57(4)(c) and (g) — Award of public service contracts — Optional grounds for exclusion from participation in a procurement procedure — Grave professional misconduct rendering the integrity of the economic operator questionable — Early termination of a prior contract owing to deficiencies in its performance — Legal challenge preventing the contracting authority from assessing the breach of contract until the end of the legal proceedings.#Case C-41/18.