Error Trace

_grad_conf_int.log

Traceback (most recent call last):
  File "PATH_TO/poptimizer/optimize.py", line 12, in opt
    optimize(date, ports=ports)
  File "PATH_TO\poptimizer\poptimizer\__main__.py", line 26, in optimize
    print(opt)
  File "PATH_TO\poptimizer\poptimizer\portfolio\optimizer.py", line 42, in __str__
    df = self._for_trade()
  File "PATH_TO\poptimizer\poptimizer\portfolio\optimizer.py", line 67, in _for_trade
    conf_int = conf_int.apply(
  File "PATH_TO\anaconda3\envs\finan\lib\site-packages\pandas\core\frame.py", line 8736, in apply
    return op.apply()
  File "PATH_TO\anaconda3\envs\finan\lib\site-packages\pandas\core\apply.py", line 688, in apply
    return self.apply_standard()
  File "PATH_TO\anaconda3\envs\finan\lib\site-packages\pandas\core\apply.py", line 805, in apply_standard
    results, res_index = self.apply_series_generator()
  File "PATH_TO\anaconda3\envs\finan\lib\site-packages\pandas\core\apply.py", line 821, in apply_series_generator
    results[i] = self.f(v)
  File "PATH_TO\poptimizer\poptimizer\portfolio\optimizer.py", line 68, in <lambda>
    lambda grad: _grad_conf_int(grad, p_value),
  File "PATH_TO\poptimizer\poptimizer\portfolio\optimizer.py", line 137, in _grad_conf_int
    interval = stats.bootstrap(
  File "PATH_TO\anaconda3\envs\finan\lib\site-packages\scipy\stats\_bootstrap.py", line 418, in bootstrap
    args = _bootstrap_iv(data, statistic, vectorized, paired, axis,
  File "PATH_TO\anaconda3\envs\finan\lib\site-packages\scipy\stats\_bootstrap.py", line 139, in _bootstrap_iv
    raise ValueError("each sample in `data` must contain two or more "
ValueError: each sample in `data` must contain two or more observations along `axis`.