python

HuggingFace Attention Mask Shape Error

RuntimeError: The expanded size of the tensor.*must match the existing size

Fixes

1.Ensure attention_mask shape matches input_ids shape
2.Pad both input_ids and attention_mask to same length
3.Use tokenizer with padding=True for automatic alignment

huggingfaceattentionshape

Related Errors

Asyncio event loop already running

RuntimeError: This event loop is already running

•Use nest_asyncio.apply() to allow nested event loops
•Use asyncio.run_coroutine_threadsafe() instead of asyncio.run()

Coroutine never awaited

RuntimeWarning: coroutine '.*' was never awaited

•Add 'await' before the coroutine call
•Use asyncio.create_task() to schedule the coroutine

Asyncio task was cancelled

asyncio\.CancelledError

•Handle CancelledError in try/except within the task
•Use asyncio.shield() to protect critical sections from cancellation