[Issue]: Cannot read CSV file！！！

[kiedeng]

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• I have searched the existing issues and this bug is not already filed.
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Describe the issue

version ： 0.9.0
During the process of generating and retrieving a CSV, it was found that it could not be executed normally, whereas the text generation worked fine.
在进行csv的生成检索中，发现不能正常执行，text是可以正常生成的。

The command used:
poetry run poe index --root indexs/ragtest_csv

The settings.yaml file was modified with the following configuration:

input:
  type: file
  file_type: csv
  file_pattern: ".*\\.csv$"

The error message is:

debug error：

[yyqstudy]

Have you solved this problem?
I also encountered the same problem, especially when the number of columns in the csv file exceeds 2, how should the text_column configured in setting.yaml be written?