[ownedbycats]

I can't open the details of a certain book:

calibre, version 7.26.101
ERROR: Unhandled exception: <b>AttributeError</b>:'NoneType' object has no attribute 'astimezone'

calibre 7.26.101  embedded-python: True
Windows-10-10.0.19045-SP0 Windows ('64bit', 'WindowsPE')
('Windows', '10', '10.0.19045')
Python 3.11.5
Windows: ('10', '10.0.19045', 'SP0', 'Multiprocessor Free')
Interface language: None
EXE path: C:\Program Files\Calibre2\calibre.exe
Successfully initialized third party plugins: ...
Traceback (most recent call last):
  File "calibre_plugins.Reading_Goal.main", line 2979, in handler
  File "calibre_plugins.Reading_Goal.main", line 3159, in show_records
AttributeError: 'NoneType' object has no attribute 'astimezone'

    "9291": {
      "authors": [
        "lostyesterday"
      ],
      "challenges": [
        "Annual"
      ],
      "date": {
        "__class__": "datetime.datetime",
        "__value__": "2025-03-05T13:55:03.612288+00:00"
      },
      "genre": [
        "Fanfiction.Star Trek"
      ],
      "last_year_pages": 0,
      "page_count": 37,
      "read_pages": 37,
      "records": {
        "0": {
          "date": null,
          "read_pages": 0,
          "status": 0
        },
        "1": {
          "date": {
            "__class__": "datetime.datetime",
            "__value__": "2025-03-05T13:55:03.612288+00:00"
          },
          "read_pages": 37,
          "status": 100.0
        }
      },
      "reread_count": 0,
      "series": null,
      "shelf": "Read",
      "status": 100.0,
      "title": "The Relevance of Flowers",
      "title_sort": "Relevance of Flowers, The"
    },