Comment 1 for bug 2018548

I realized after posting this that I was posting the code from a packaged version. Here is the code from the website install:

calibre, version 6.17.0
ERROR: Unhandled exception: <b>TypeError</b>:'NoneType' object is not iterable

calibre 6.17 embedded-python: True
Linux-6.3.1-arch1-1-x86_64-with-glibc2.37 Linux ('64bit', 'ELF')
('Linux', '6.3.1-arch1-1', '#1 SMP PREEMPT_DYNAMIC Mon, 01 May 2023 17:42:39 +0000')
Python 3.10.1
Interface language: en_CA
Traceback (most recent call last):
  File "calibre/gui2/tag_browser/ui.py", line 284, in do_tags_list_edit
  File "calibre/gui2/dialogs/tag_list_editor.py", line 230, in __init__
  File "calibre/gui2/dialogs/tag_list_editor.py", line 425, in fill_in_table
  File "calibre/gui2/dialogs/tag_list_editor.py", line 390, in create_table
TypeError: 'NoneType' object is not iterable