Erratum: Coupled-Channel Interpretation of the LHCb Double-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>J</mml:mi><mml:mo stretchy="false">/</mml:mo><mml:mi>ψ</mml:mi></mml:mrow></mml:math> Spectrum and Hints of a New State Near the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>J</mml:mi><mml:mo stretchy="false">/</mml:mo><mml:mi>ψ</mml:mi><mml:mi>J</mml:mi><mml:mo stretchy="false">/</mml:mo><mml:mi>ψ</mml:mi></mml:mrow></mml:math> Threshold [Phys. Rev. Lett. <b>126</b>, 132001 (2021)]

Xiang-Kun Dong, V. Baru, Feng-Kun Guo, C. Hanhart, A. V. Nefediev