`TypeError: 'NoneType' object is not subscriptable` with MDB file from AADvance Workbench

[alexchandel]

Hello, I encounter this error when trying to parse a certain table (the Symbols table) of an MDB file produced by AADvance Workbench. Can you help with this?

> uv run main.py
Error while parsing MSysObjects table chunk.
Error while parsing MSysObjects table chunk.
Error while parsing MSysObjects table chunk.
... (above message repeated a lot) ...
Failed to parse memo field. Using data as bytes
Failed to parse memo field. Using data as bytes
Failed to parse memo field. Using data as bytes
Failed to parse memo field. Using data as bytes
Failed to parse memo field. Using data as bytes
Could not find overflow record data page overflow pointer: 32774
Traceback (most recent call last):
  File "C:\src\testpy\main.py", line 15, in <module>
    main()
    ~~~~^^
  File "C:\src\testpy\main.py", line 11, in main
    print(tabulate(db.parse_table('Symbols'), headers='keys'))
                   ~~~~~~~~~~~~~~^^^^^^^^^^^
  File "C:\src\testpy\.venv\Lib\site-packages\access_parser\access_parser.py", line 186, in parse_table
    return self.get_table(table_name).parse()
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "C:\src\testpy\.venv\Lib\site-packages\access_parser\access_parser.py", line 258, in parse
    self._parse_row(record)
    ~~~~~~~~~~~~~~~^^^^^^^^
  File "C:\src\testpy\.venv\Lib\site-packages\access_parser\access_parser.py", line 302, in _parse_row
    self._parse_dynamic_length_data(original_record, metadata, relative_records_column_map, null_table)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\src\testpy\.venv\Lib\site-packages\access_parser\access_parser.py", line 428, in _parse_dynamic_length_data
    parsed_type = self._parse_memo(relative_obj_data)
  File "C:\src\testpy\.venv\Lib\site-packages\access_parser\access_parser.py", line 555, in _parse_memo
    next_page = struct.unpack("I", rec_data[:4])[0]
                                   ~~~~~~~~^^^^
TypeError: 'NoneType' object is not subscriptable