How can unanimous voting lead the league of nations to fail?

Unanimous voting in the League of Nations often led to paralysis in decision-making, as any single member could block proposals, even those with broad support. This requirement made it difficult to respond effectively to international crises, as consensus was hard to achieve among diverse nations with varying interests. Consequently, critical actions were delayed or abandoned, undermining the League's authority and effectiveness, and ultimately contributing to its failure to maintain peace and prevent conflicts in the interwar period.