Mongoengine: TypeError: __init__() got an unexpected keyword argument

Question

I am using flask-mongoengine extension and I have a User class like this:

class User(db.Document, UserMixin):     
    email = db.StringField(max_length=120,         


        

Answer 1

I don't know why but I was also keep getting the same error and only after downgrading pymongo from 3.0 to 2.8 it got fixed as David mentioned.

Pymongo should publish a fix for that, it is frustrating and made me waste couple of hours before realizing it.