Built a database with flask-sqlalchemy,marshmallow and python.

I will try my best to get as much code as I can, but please bare in mind that too much code and not enough non code wont let me post.

class Specs(db.Model):
    id = db.Column(db.Integer, unique=True, autoincrement=True)
    qrcode = db.Column(db.String(), unique=False)
    sn = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(100), unique=False)
    designator = db.Column(db.String(144), unique=False)
    subdesignator = db.Column(db.String(20), unique=False)
    oil = db.Column(db.String(15), unique=False)
    coolant = db.Column(db.String(15), unique=False)
    department =db.Column(db.String(20), unique=False)
    motor = db.Column(db.String(), unique=False)
    hours = db.Column(db.String(),unique=False)


    def __init__(self,qrcode,sn, name, designator, subdesignator,oil,coolant,department,motor,hours):
        self.qrcode = qrcode
        self.sn = sn
        self.name = name
        self.designator = designator
        self.subdesignator = subdesignator
        self.oil = oil
        self.coolant = coolant
        self.department = department
        self.motor = motor
        self.hours = hours



class SpecsSchema(ma.Schema):
    class Meta:
        fields = ('qrcode','sn', 'name', 'designator', 'subdesignator','oil','coolant','department','motor','hours')


specs_schema = SpecsSchema()
specss_schema = SpecsSchema(many=True)


class Task(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    job = db.Column(db.String, unique=False)
    instructions = db.Column(db.String, unique=False)

    
    
    
    


    def __init__(self, id, job, instructions):
        self.id = id
        self.job = job
        self.instructions = instructions
       
        



class TaskSchema(ma.Schema):
    class Meta:
        fields = ('id','job', 'instructions' )


task_schema = TaskSchema()
tasks_schema = TaskSchema(many=True)


@app.route('/Task', methods=["POST"])
def add_task():
    id = request.json['id']
    job = request.json['job']
    instructions = request.json['instructions']
    
    

    new_task = Task(id, job, instructions)

    db.session.add(new_task)
    db.session.commit()

    task = Task.query.get(new_task.id)

    return task_schema.jsonify(task)


ERROR
Traceback (most recent call last):
  File "C:UsersChris.virtualenvsBackend-NKSSbLU1Libsite-packagesflaskapp.py", line 1498, in __call__
    return self.wsgi_app(environ, start_response)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:UsersChris.virtualenvsBackend-NKSSbLU1Libsite-packagesflaskapp.py", line 1476, in wsgi_app
    response = self.handle_exception(e)
               ^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:UsersChris.virtualenvsBackend-NKSSbLU1Libsite-packagesflaskapp.py", line 1473, in wsgi_app
    response = self.full_dispatch_request()
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:UsersChris.virtualenvsBackend-NKSSbLU1Libsite-packagesflaskapp.py", line 882, in full_dispatch_request
    rv = self.handle_user_exception(e)
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:UsersChris.virtualenvsBackend-NKSSbLU1Libsite-packagesflaskapp.py", line 880, in full_dispatch_request
    rv = self.dispatch_request()
         ^^^^^^^^^^^^^^^^^^^^^^^
  File "C:UsersChris.virtualenvsBackend-NKSSbLU1Libsite-packagesflaskapp.py", line 865, in dispatch_request
    return self.ensure_sync(self.view_functions[rule.endpoint])(**view_args)  # type: ignore[no-any-return]
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:UsersChrisDesktopMaintTrackerBackendapp.py", line 174, in add_task
    id = request.json['id']
         ^^^^^^^^^^^^^^^^^^
KeyError: 'id'

Everything was working fine until I tried to add a column to one model and it messed up a bunch of things. Now my id column only comes up as null in one model and gives an error in the other.