Erratum to: Semileptonic form factors for $$B\rightarrow D^*\ell \nu $$ <math> <mrow> <mi>B</mi> <mo>→</mo> <msup> <mi>D</mi> <mo>∗</mo> </msup> <mi>ℓ</mi> <mi>ν</mi> </mrow> </math> at nonzero recoil from $$2+1$$ <math> <mrow> <mn>2</mn> <mo>+</mo> <mn>1</mn> </mrow> </math> -flavor lattice QCD