[Bug] `obb.stocks.load()` doesn't correctly parse symbols list

[jjfantini]

Describe the bug Using openbb SDK v4, I checked the types expected by obb.stocks.load(). I found you could upload a List[str] of symbols. Passing a list to the command though results in an OBBError for both fmp and yfinance providers.

To Reproduce Steps(from the start) and commands to reproduce the behavior: 1.

from openbb import obb

obb.account.login(pat="<pat>")

stocks = ["AAPL", "TSLA"]
data = obb.stocks.load(symbol=stocks, provider="yfinance")

Screenshots

Desktop (please complete the following information):

• OS: Windows 11
• Python version: 3.10.12
• openbb: 4.0.0a3

Additional context