Measurements suggesting the Methuselah star (HD 140283) is older than the universe have been resolved by accounting for observational and modeling uncertainties, including refined parallax and chemical composition data.
Both retrieved papers that specifically investigate the age of the Methuselah star (HD 140283) conclude that initial age tensions were artifacts of observational and modeling uncertainties, and that its refined age is consistent with the age of the universe. No papers refute this claim.