qlib出现以下警告怎么解决，这些警告好像出现在回测当中。

[wzcxyz386]

🐛 Bug Description

To Reproduce

Steps to reproduce the behavior:

日志警告：
[14490:MainThread](2024-09-20 13:27:06,572) INFO - qlib.backtest caller - [init.py:93] - Create new exchange
[14490:MainThread](2024-09-20 13:27:18,399) WARNING - qlib.online operator - [exchange.py:219] - $close field data contains nan.
[14490:MainThread](2024-09-20 13:27:18,400) WARNING - qlib.online operator - [exchange.py:219] - $close field data contains nan.
[14490:MainThread](2024-09-20 13:27:19,860) WARNING - qlib.data - [data.py:665] - load calendar error: freq=day, future=True; return current calendar!
[14490:MainThread](2024-09-20 13:27:19,861) WARNING - qlib.data - [data.py:668] - You can get future calendar by referring to the following document: https://github.com/microsoft/qlib/blob/main/scripts/data_collector/contrib/README.md
[14490:MainThread](2024-09-20 13:27:19,955) WARNING - qlib.BaseExecutor - [executor.py:121] - common_infra is not set for <qlib.backtest.executor.SimulatorExecutor object at 0x7fc745cee760>

Expected Behavior

Screenshot

Environment

Note: User could run cd scripts && python collect_info.py all under project directory to get system information
and paste them here directly.

• Qlib version:
• Python version:
• OS (Windows, Linux, MacOS):
• Commit number (optional, please provide it if you are using the dev version):

Additional Notes