Question

it was not meant to be这里是不是少了宾语？

Answer 1

it was not meant to be （这不是命中注定）

一个完整的句子。
固定短语 meant to be 做句子的表语。
meant to be ：原本；愿意；本来意思；命中注定。
It was meant to be another way （他还有另一层意思）
Personally I prefer drinking green tea as it was meant to be （就个人而言，我倾向于饮用绿茶的原味）
it was more the banner of a cause than the real tool itwas meant to be. （而不是一个它原本意欲成为的实用工具。）

Answer 2

你好，这个句子是完整的。