Error when parsing spreadsheet withEmpty sheet

[fagiothree]

if one of the sheet in the google spreadsheet is empty, there is an error when parsing it:
table.headers = content[0]
IndexError: list index out of range

Instead of having an error we should have a warning saying that there is an empty sheet if the sheet is not released in the content_index sheet (could be draft or not mentioned)

Is this the same for excel files?