class BillAdjustment(models.Model):
    _name = 'bill.adjustment'
    _description = 'Bill And Adjustment'

products = fields.One2many('bill.adjustment.items', 'bill_id', string='Products')

class BillAdjustmentItems(models.Model):
    _name = 'bill.adjustment.items'
    _description = 'Job Summary Items'

    bill_id = fields.Many2one('bill.adjustment', string='Bill Summary')
    item_name = fields.Char('Item Name')
    quantity = fields.Float('Quantity')
    unit_price = fields.Float('Unit Price')
    total = fields.Float('Total', compute='_compute_total', store=True)
    bill_id = fields.Many2one('bill.adjustment', string='Bill Adjustment')

class AccountAmount(models.Model):
    _inherit = "account.move"

    type_id = fields.Many2one(
        string="Type", comodel_name="bill.adjustment", required=True)
    approve_amount = fields.Float(string="Approve Amount")

@api.onchange('type_id')
def onchange_type_id(self):
    if self.type_id:
        bill_adjustment = self.env['bill.adjustment'].browse(self.type_id.id)
        self.approve_amount = bill_adjustment.app_amount if bill_adjustment else 0.0

def create_move_lines(self):
    for record in self:
        if record.type_id:
            bill_adjustment = self.env['bill.adjustment'].browse(record.type_id.id)
            for item in bill_adjustment.products:
                product_id = item.item_name  # Assuming item_name is a Many2one field
                quantity = item.quantity
                price_unit = item.unit_price
                price_subtotal = item.total
                # Create account move line using item data
                self.env['account.move.line'].create({
                    'move_id': record.id,
                    'product_id': product_id,
                    'quantity': quantity,
                    'price_unit': price_unit,
                    'price_subtotal': price_subtotal
                })
here i want when i click on create_move_lines then automatically with the type i mention this type_id bill.adjustment/items filed value will fetch in accout.move.line model
 in product_id ,quantity,price_unit,price_subtotal field
but here i face this erro

sycopg2.errors.InvalidTextRepresentation: invalid input syntax for type integer: "cold drinks"
LINE 1: ...000000', NULL, 44, '1800.00', '1800.00', '20.00', 'cold drin...

how i solve this?
please help me