ValueError: need at least one array to stack

[renaissanceee]

When I run python train.py --cfg config/example/test/train.yml split train with feicuiwan_sample_folder, the error above takes place.
I follow the structure mentioned in minimal example dataset:

|-data
|- -feicuiwan_sample_folder
|- -|--cache
|- -|--cache_val
|- -|--sparse

[zhuning3645]

I had the same problem, and here's how I solved it.The main reason is because the suffix of my data is .jpg, but the uppercase .JPG in the configuration file.You can modify the dataset.yml file, delete the previously generated cache file cahe.pkl, and then reload.Good luck