The problem was that the category Category:Cats is empty, and when fetching empty categories the importer did not create the corresponding columns, which were assumed to exist later on. This fixes it by setting up the columns before any rows are created in the project.
Closes #124.
The problem was that the category
Category:Catsis empty, and when fetching empty categories the importer did not create the corresponding columns, which were assumed to exist later on. This fixes it by setting up the columns before any rows are created in the project.