create_coco_roidb error

[FirasKedidi]

Hello,
I want to train a faster rcnn model on my custom data.
I followed the getting started tutorial but when I ran the create_coco_roidb command I got this error.
PS: I am using colab.
`%%shell
cd ./simpledet
mkdir -p data/src
mkdir -p data/newspaper/annotations
ln -s content/drive/MyDrive/training_dataset_1/training_dataset.json data/newspaper/annotations/instances_train2007.json
ln -s content/drive/MyDrive/validation (1)/validation_dataset.json data/newspaper/annotations/instances_val2007.json

mkdir -p simpledet/data/coco/images
ln -s 'content/drive/MyDrive/training_dataset_1' data/newspaper/images/train2007
ln -s 'content/drive/MyDrive/validation (1)' data/newspaper/images/val2007
python ./simpledet/utils/create_coco_roidb.py --dataset newspaper --dataset-split train2007
python ./simpledet/utils/create_coco_roidb.py --dataset newspaper --dataset-split val2007
`
The error is in the level of create_coco_roidb