Hi,

I'm learning vectorbt atm and i'm rinning in a warning over and over again.
`
C:\Users\sjaak\anaconda3\envs\backtesting\lib\site-packages\vectorbt\data\base.py:527: UserWarning: Symbols have mismatching index. Dropping missing data points.
data = cls.align_index(data, missing=missing_index)
Traceback (most recent call last):
File "C:\Users\sjaak\OneDrive\Bureaublad\Python\backtesting\main.py", line 10, in
rsi = vbt.RSI.run(df, window=14)
File "C:\Users\sjaak\anaconda3\envs\backtesting\lib\site-packages\vectorbt\indicators\factory.py", line 13, in run

File "C:\Users\sjaak\anaconda3\envs\backtesting\lib\site-packages\vectorbt\indicators\factory.py", line 2860, in _run
results = run_pipeline(
File "C:\Users\sjaak\anaconda3\envs\backtesting\lib\site-packages\vectorbt\indicators\factory.py", line 1881, in run_pipeline
output = _call_custom_func(
File "C:\Users\sjaak\anaconda3\envs\backtesting\lib\site-packages\vectorbt\indicators\factory.py", line 1821, in _call_custom_func
return custom_func(
File "C:\Users\sjaak\anaconda3\envs\backtesting\lib\site-packages\vectorbt\indicators\factory.py", line 3333, in custom_func
cache = cache_func(
File "C:\Users\sjaak\anaconda3\envs\backtesting\lib\site-packages\numba\core\dispatcher.py", line 468, in _compile_for_args
error_rewrite(e, 'typing')
File "C:\Users\sjaak\anaconda3\envs\backtesting\lib\site-packages\numba\core\dispatcher.py", line 409, in error_rewrite
raise e.with_traceback(None)
numba.core.errors.TypingError: Failed in nopython mode pipeline (step: nopython frontend)
non-precise type array(pyobject, 2d, F)
During: typing of argument at C:\Users\sjaak\anaconda3\envs\backtesting\lib\site-packages\vectorbt\indicators\nb.py (105)

File "........\anaconda3\envs\backtesting\lib\site-packages\vectorbt\indicators\nb.py", line 105:
def rsi_cache_nb(close: tp.Array2d, windows: tp.List[int], ewms: tp.List[bool],

"""Caching function for vectorbt.indicators.basic.RSI."""
delta = generic_nb.diff_nb(close)
^
`

It happens when I give the YFData.download a list of symbols. It does not happend whit a single value....
Someone here who can help me out?

Kind regards