When uploading to another dataset the code works …
Hmm, that’s strange…
In the case of quota-related errors, error messages tend to appear that indicate the cause as much as possible (such as “Rate Limited”, “429”, “Quota Exceeded”, “Offending Files”, etc.).
It may really be some kind of restriction…? 
By the way, I recommend updating hf_xet just in case.
pip install -U huggingface_hub[hf_xet]