I am trying to override the create() function of mrp.bom and in it i will change the value if a field in product.template , but when i press 'save' i face that error :

res = super(bom_override, self).create(vals)
TypeError: super(type, obj): obj must be an instance or subtype of type

i searched for the reason and every reason i found i checked my code for it and nothing to slove 
i hope that anyone can help me with that.

 here is my code:

class bom_override(models.Model):
    _name = 'mrp.bom'
    _inherit = 'mrp.bom'
   
    @api.model
    def create(self, vals):
        product_obj = self.env['product.template'].search([('id','=',vals['product_id'])])
        product_obj.write({'has_bom':True})
        res = super(bom_override, self).create(vals)
        return res

Thanks in advance ..,