i have this new model that inherit the project.project model:

class RealEstateProject(models.Model):

    _name = 'real.estate.project.classical'

    _inherit = 'project.project'

    _description = 'Real Estate Projects'

after running it appears this problem of many2many fields  :

TypeError: Many2many fields real.estate.project.classical.favorite_user_ids and project.project.favorite_user_ids use the same table and columns

i added this field to my new model

favorite_user_ids = fields.Many2many(

        'res.users',

        'real_estate_project_favorite_user_rel',

        'project_id',

        'user_id',

        string='Favorite Users'

    )

then i have another field 

TypeError: Many2many fields real.estate.project.classical.type_ids and project.project.type_ids use the same table and columns

so i add it

type_ids = fields.Many2many(

        'project.task.type',

        'real_estate_type_rel', 

        'project_id',

        'type_id',

        string='Types'

    )

now after running i have this problem of foreign key:

psycopg2.errors.UndefinedColumn: column "real_estate_project_classical_id" referenced in foreign key constraint does not exist

How can i solve this please !!