Hi, I've faced next problem:

SQLSTATE[42S22]: Column not found: 1054 Unknown column 'product_id' in 'field list' (SQL: select `product_id` from `products` where `products`.`parent_id` = 27 and `products`.`parent_id` is not null)

Steps to reproduce:
Create a new marketplace, approve it.
Go to marketplace/account/catalog/products
Create new configurable product /marketplace/account/catalog/products/create
Select product type configurable and any attribute family
Click create 2 times
Problem appears, product not created.