ValueError: mmap length is greater than file size

[maciejmajek]

When running the automatic_model_training.ipynb locally, I've come across a problem with the training script --train_model.
I was able to solve this by adding + to the mmap_mode.

self.data = {label: np.load(fl, mmap_mode='r+') for label, fl in data_files.items()}

env:
python3.10

Stack trace

File "openwakeword/openwakeword/train.py", line 845, in
batch_generator = mmap_batch_generator(
File "/home/mmajek/projects/internal/rai/openwakeword/openwakeword/data.py", line 788, in init
self.data = {label: np.load(fl, mmap_mode='r') for label, fl in data_files.items()}
File "/home/mmajek/projects/internal/rai/openwakeword/openwakeword/data.py", line 788, in
self.data = {label: np.load(fl, mmap_mode='r') for label, fl in data_files.items()}
File "/home/mmajek/.cache/pypoetry/virtualenvs/rai-qH6Oly3A-py3.10/lib/python3.10/site-packages/numpy/lib/npyio.py", line 453, in load
return format.open_memmap(file, mode=mmap_mode,
File "/home/mmajek/.cache/pypoetry/virtualenvs/rai-qH6Oly3A-py3.10/lib/python3.10/site-packages/numpy/lib/format.py", line 945, in open_memmap
marray = numpy.memmap(filename, dtype=dtype, shape=shape, order=order,
File "/home/mmajek/.cache/pypoetry/virtualenvs/rai-qH6Oly3A-py3.10/lib/python3.10/site-packages/numpy/core/memmap.py", line 268, in new
mm = mmap.mmap(fid.fileno(), bytes, access=acc, offset=start)
ValueError: mmap length is greater than file size