[Python] Getting Validation Errors in Marshmallow schema

I am using the Marshmallow library for data validation and serialization. I am allowing None values for some fields in my schema, but I keep getting validation errors even though I have set allow_none = True.

class MySchema(Schema):
name = fields.String(required=True, allow_none=True)
age = fields.Integer(allow_none=True)

schema = MySchema()

data = {"age": None}
result = schema.load(data)
print(result)



Why is it failing validation for the 'name' field even though allow_none = True ?

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