[Bug]: TypeError: 'NoneType' object is not iterable

[IAmVigneswaran]

CSV2Notion Neo Version?

1.2.0

What OS are you using?

MacOS

OS Version or Linux distribution

macOS Sonoma

Bug Description

Unable to upload Timeline Index from CommandPost's CSV

Timeline Index.csv

Log excerpt

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 47, in _validate_image_column
TypeError: 'NoneType' object is not iterable
[1503] Failed to execute script '__main__' due to unhandled exception!