IndexError: index 0 is out of bounds for axis 0 with size 0

[lordwildbeast]

i met an error while I ran the following commands within the toolkit to create my custom training dataset.
python main.py downloader --classes 'Vehicle_registration_plate' --type_csv train --limit 15

do you know how to solve it? thanks

[ThinkWD]

This is because the passed in classes cannot find the same value in OID/csv_folder/class-descriptions-boxable.csv

[siri-g-265]

This issue is faced when the class names are more than one word.

Solution:
Make a classes.txt file with all the class names you want to download and send the path
python main.py downloader --classes OID/classes.txt --type_csv train --limit 15