Some ProblemDocs fail the validation

The problemDoc.json in the following datasets failed the validation:

1. /datasets/d3m-datasets/seed_datasets_data_augmentation/DA_poverty_estimation/
2. /datasets/d3m-datasets/seed_datasets_data_augmentation/DA_college_debt/
3. /datasets/d3m-datasets/seed_datasets_data_augmentation/DA_fifa2018_manofmatch/
4. /datasets/d3m-datasets/seed_datasets_data_augmentation/DA_ny_taxi_demand/
5. /datasets/d3m-datasets/seed_datasets_data_augmentation/DA_medical_malpractice/
6. /datasets/d3m-datasets/seed_datasets_data_augmentation/DA_global_terrorism/

All of them have the similar error message:

File "/code/aika/problems/base.py", line 61, in populate
    problem_description = problem_module.parse_problem_description(problem_path)
File "/usr/local/lib/python3.6/dist-packages/d3m/metadata/problem.py", line 547, in parse_problem_description
    PROBLEM_SCHEMA_VALIDATOR.validate(description)
File "/usr/local/lib/python3.6/dist-packages/jsonschema/validators.py", line 130, in validate
    raise error
jsonschema.exceptions.ValidationError: [{'domain': ['...', '...', '...'], 'keywords': ['...', '...', '...']}] is not of type 'object'