Exception: cannot reindex from a duplicate axis

[graceyangfan]

Hello,I meet this error several time,The full info is:
I check my pandas dataframe sveral time,There is no duplicate axis.
My X and y like:

Traceback (most recent call last):
  File "/usr/local/lib/python3.9/dist-packages/tuneta/optimize.py", line 128, in eval_res
    res = eval(function)
  File "<string>", line 1, in <module>
  File "/usr/local/lib/python3.9/dist-packages/pandas_ta/volume/kvo.py", line 51, in kvo
    df = DataFrame(data)
  File "/usr/local/lib/python3.9/dist-packages/pandas/core/frame.py", line 614, in __init__
    mgr = dict_to_mgr(data, index, columns, dtype=dtype, copy=copy, typ=manager)
  File "/usr/local/lib/python3.9/dist-packages/pandas/core/internals/construction.py", line 464, in dict_to_mgr
    return arrays_to_mgr(
  File "/usr/local/lib/python3.9/dist-packages/pandas/core/internals/construction.py", line 124, in arrays_to_mgr
    arrays = _homogenize(arrays, index, dtype)
  File "/usr/local/lib/python3.9/dist-packages/pandas/core/internals/construction.py", line 571, in _homogenize
    val = val.reindex(index, copy=False)
  File "/usr/local/lib/python3.9/dist-packages/pandas/core/series.py", line 4580, in reindex
    return super().reindex(index=index, **kwargs)
  File "/usr/local/lib/python3.9/dist-packages/pandas/core/generic.py", line 4818, in reindex
    return self._reindex_axes(
  File "/usr/local/lib/python3.9/dist-packages/pandas/core/generic.py", line 4839, in _reindex_axes
    obj = obj._reindex_with_indexers(
  File "/usr/local/lib/python3.9/dist-packages/pandas/core/generic.py", line 4883, in _reindex_with_indexers
    new_data = new_data.reindex_indexer(
  File "/usr/local/lib/python3.9/dist-packages/pandas/core/internals/managers.py", line 670, in reindex_indexer
    self.axes[axis]._validate_can_reindex(indexer)
  File "/usr/local/lib/python3.9/dist-packages/pandas/core/indexes/base.py", line 3785, in _validate_can_reindex
    raise ValueError("cannot reindex from a duplicate axis")
ValueError: cannot reindex from a duplicate axis

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.9/dist-packages/multiprocess/pool.py", line 125, in worker
    result = (True, func(*args, **kwds))
  File "/usr/local/lib/python3.9/dist-packages/tuneta/optimize.py", line 237, in fit
    self.study.optimize(
  File "/usr/local/lib/python3.9/dist-packages/optuna/study/study.py", line 419, in optimize
    _optimize(
  File "/usr/local/lib/python3.9/dist-packages/optuna/study/_optimize.py", line 66, in _optimize
    _optimize_sequential(
  File "/usr/local/lib/python3.9/dist-packages/optuna/study/_optimize.py", line 160, in _optimize_sequential
    frozen_trial = _run_trial(study, func, catch)
  File "/usr/local/lib/python3.9/dist-packages/optuna/study/_optimize.py", line 234, in _run_trial
    raise func_err
  File "/usr/local/lib/python3.9/dist-packages/optuna/study/_optimize.py", line 196, in _run_trial
    value_or_values = func(trial)
  File "/usr/local/lib/python3.9/dist-packages/tuneta/optimize.py", line 238, in <lambda>
    lambda trial: _objective(self, trial, X, y),
  File "/usr/local/lib/python3.9/dist-packages/tuneta/optimize.py", line 162, in _objective
    res = eval_res(X, self.function, self.idx, trial)
  File "/usr/local/lib/python3.9/dist-packages/tuneta/optimize.py", line 131, in eval_res
    raise Exception(e)
Exception: cannot reindex from a duplicate axis
"""

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/notebooks/feature_select.py", line 197, in <module>
    tt.fit(X_train, y_train,
  File "/usr/local/lib/python3.9/dist-packages/tuneta/tune_ta.py", line 197, in fit
    self.fitted = [fit.get() for fit in self.fitted]
  File "/usr/local/lib/python3.9/dist-packages/tuneta/tune_ta.py", line 197, in <listcomp>
    self.fitted = [fit.get() for fit in self.fitted]
  File "/usr/local/lib/python3.9/dist-packages/multiprocess/pool.py", line 771, in get
    raise self._value
Exception: cannot reindex from a duplicate axis