Traceback (most recent call last):


 "site-packages\calibre\utils\formatter.py", line 375, in safe_format


 "site-packages\calibre\utils\formatter.py", line 340, in evaluate


 "site-packages\calibre\utils\formatter.py", line 264, in _eval_program


 "site-packages\calibre\utils\formatter.py", line 106, in program


 "site-packages\calibre\utils\formatter.py", line 113, in statement


 "site-packages\calibre\utils\formatter.py", line 157, in expr


 "site-packages\calibre\utils\formatter.py", line 113, in statement


 "site-packages\calibre\utils\formatter.py", line 157, in expr


 "site-packages\calibre\utils\formatter.py", line 113, in statement


 "site-packages\calibre\utils\formatter.py", line 157, in expr


 "site-packages\calibre\utils\formatter.py", line 113, in statement


 "site-packages\calibre\utils\formatter.py", line 169, in expr


 "site-packages\calibre\utils\formatter_functions.py", line 132, in eval_


 "site-packages\calibre\utils\formatter_functions.py", line 359, in evaluate


 "site-packages\calibre\ebooks\metadata\book\formatter.py", line 32, in get_value
ValueError: Value: unknown field #genre

Traceback (most recent call last):


 "/usr/lib/python3/dist-packages/spyder/widgets/variableexplorer/collectionseditor.py", line 449, in createEditor

if not editor.setup_and_check(value, title=key, readonly=readonly):


 "/usr/lib/python3/dist-packages/spyder/widgets/variableexplorer/arrayeditor.py", line 619, in setup_and_check

self.data.flags.writeable = True
ValueError: cannot set WRITEABLE flag to True of this array
