[Bug]: TypeError: unhashable type: 'list'

[IAmVigneswaran]

CSV2Notion Neo Version?

1.2.1

What OS are you using?

MacOS

OS Version or Linux distribution

macOS

Bug Description

@samplue Reports an error when uploading CSV Data Set.

Log excerpt

INFO: CSV2Notion Neo version 1.2.1
INFO: Validating csv & csv2notion_neo.notion DB schema
Traceback (most recent call last):
  File "csv2notion_neo/main.py", line 5, in <module>
  File "csv2notion_neo/cli.py", line 95, in main
  File "csv2notion_neo/cli.py", line 52, in cli
  File "csv2notion_neo/cli_steps.py", line 53, in convert_csv_to_notion_rows
  File "csv2notion_neo/notion_preparator.py", line 43, in prepare
  File "csv2notion_neo/notion_preparator.py", line 103, in _handle_missing_columns
  File "csv2notion_neo/notion_preparator.py", line 234, in _get_missing_columns
TypeError: unhashable type: 'list'
[37529] Failed to execute script 'main' due to unhandled exception!