日本語を勉強しましょう

船頭多くして船山に登る

[せんどうおおくしてふねやまにのぼる]

Literally: "The boat is climbing a mountain with many skippers". How can the boat climb to a mountain? That's funny. J
英語の諺：Too many cooks spoil the broth.
This means "If too many people work at a task, the end product might be ruined".
Many people without clear responsibility, of course the task might be ruined easily.