How to use Embedded Document in bulk insert

[mustafakhalidcs]

I'm using this model

class Schedule(EmbeddedDocument):
    scheduleId: StringField(required=True)
    detail: StringField()

class AccountBalance(Document):
    memberID = StringField(required=True)
    schedule = ListField(EmbeddedDocumentField(Schedule))

 array = []
for index, row in df.iterrows():

    # handle schedule
    schedule = Schedule()
    schedule.scheduleId = "1234667777"
    schedule.detail = "some random detail"

    payload = {
        "memberID": "98765",
        "schedule": schedule,
    }

    array.append(payload)

 person_instances = [TrialBalance(**data) for data in array]
 AccountBalance.objects.insert(person_instances, load_bulk=False)

If I comment out code for schedule class (Embedded document), the code works like charm but when I try to run this code, it throws an error The source SON object needs to be of type 'dict' but a '<class 'str'>' was found

Can someone tell me how to use the embedded document in bulk insert or how to fix this error??

[martin-milon-capgemini]

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