The right-hand side of Theorem 3.1 of [Reference WoodWoo10] should contain an additional factor of $(\operatorname{Res}_{s=1}\unicode[STIX]{x1D701}_{K}(s))^{w_{K,C}}$. The equality $\lim _{s\rightarrow 1}\unicode[STIX]{x1D701}_{K}(s)=1$ was mistakenly used, which holds for $K=\mathbb{Q}$ but does not hold in general (the residue is given by the analytic class number formula).
Thank you to Rachel Newton, Christopher Frei, and Daniel Loughran for pointing this out.