70As the concept of ‘serious difficulties’ is objective in nature, proof of the existence of such difficulties, which must be looked for both in the circumstances in which the decision was adopted after the preliminary investigation and in its content, must be furnished by the applicant seeking the annulment of that decision, by reference to a body of consistent evidence (judgment of 17 November 2022, Irish Wind Farmers’ Association and Others v Commission, C‑578/21 P, EU:C:2022:898, paragraph 54 and the case-law cited).
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