47In that regard, it should, however, be recalled that, according to settled case-law, in proceedings for failure to fulfil obligations, it is for the Commission to prove the existence of the alleged infringement and to provide the Court with the information necessary for it to determine whether there has indeed been an infringement, and the Commission may not rely on any presumption for that purpose (judgment of 24 June 2021, Commission v Spain(Deterioration of the Doñana natural area), C‑559/19, EU:C:2021:512, paragraph 46 and the case-law cited).