Case T-65/19: Judgment of the General Court of 14 July 2021 — AI v ECDC (Civil service — ECDC staff — Psychological harassment — Article 12a of the Staff Regulations — Request for assistance — Scope of the duty to provide assistance — Article 24 of the Staff Regulations — Resignation of the perpetrator of the behaviour complained of — Failure to open a disciplinary procedure — Article 86 of the Staff Regulations — Reply to a request for assistance — Action for annulment — Act adversely affecting an official — Infringement of the right to be heard — No statement of reasons — Denial of access to the investigation report and other documents — Article 41 of the Charter of Fundamental Rights — Liability)