Save data to mongodb through code

Questions & Help Questions
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1

Hello.
I using Mongo.Ecto to mongodb connection, when I run in CLI commands:

person = %Friends.Person{}
Friends.Repo.insert(person)

I got result and a record is created. But with same commands in code I can’t do it. How do it?
Repository with full proj:
https://github.com/dersar00/friends