Mongo.Repo.insert_or_update-exclamation-mark

You're seeing just the callback insert_or_update-exclamation-mark, go back to Mongo.Repo module for more information.
Link to this callback

insert_or_update!(doc)

View Source (optional)

Specs

insert_or_update!(doc :: Mongo.Collection.t()) :: Mongo.Collection.t()

Same as Mongo.Repo.insert_or_update/1 but raises an error.