Traceback for subsplit

Logs.txt

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AssertionError                            Traceback (most recent call last)
<ipython-input-6-ba8aad3a0131> in <module>()
      3 s1, s2, s3 = tfds.Split.TRAIN.subsplit(weighted = [2, 1, 1])
      4 
----> 5 dataset,info= tfds.load('mnist',with_info=True, split=s1)

13 frames
/content/datasets/tensorflow_datasets/core/tfrecords_reader.py in _str_to_relative_instruction(spec)
    355   res = _SUB_SPEC_RE.match(spec)
    356   if not res:
--> 357     raise AssertionError('Unrecognized instruction format: %s' % spec)
    358   unit = '%' if res.group('from_pct') or res.group('to_pct') else 'abs'
    359   return ReadInstruction(

AssertionError: Unrecognized instruction format: NamedSplit('train')(tfds.percent[0:50])