Failed to setup BrowserCache(Directory does not contain a known browser cache type: 'C:\Users\Toshiba C55-A5100\AppData\Local\Mozilla\Firefox\Profiles\h1yno njd.default-1611513187773\cache2
ver 85 of firefox windows 8.1
Traceback (most recent call last):
File "calibre\customize\ui.py", line 703, in initialize_plugins
File "calibre\customize\ui.py", line 61, in load_plugin
File "calibre\customize\zipplugin.py", line 293, in load
File "importlib\__init__.py", line 127, in import_module
File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
File "<frozen importlib._bootstrap>", line 991, in _find_and_load
File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
File "calibre\customize\zipplugin.py", line 192, in exec_module
File "calibre_plugins.fantastic_fiction.__init__", line 10, in <module>
ModuleNotFoundError: No module named 'HTMLParser'
FFF: DEBUG: 2021-02-16 20:34:40,030: calibre_plugins.fanficfare_plugin.fff_plugin(222): Plugin FanFicFare macmenuhack file_path:C:\Users\Toshiba C55-A5100\AppData\Roaming\calibre\plugins\fanficfare_m acmenuhack.txt
calibre Debug log
calibre 5.10.1 [64bit] embedded-python: True is64bit: True
Windows-8.1-6.3.9600 Windows ('64bit', 'WindowsPE')
('Windows', '8.1', '6.3.9600')
Python 3.8.5
Windows: ('8.1', '6.3.9600', '', 'Multiprocessor Free')
Interface language: None
Failed to initialize plugin: 'C:\\Users\\Toshiba C55-A5100\\AppData\\Roaming\\calibre\\plugins\\Fantast ic Fiction.zip'
Successfully initialized third party plugins: FanFicFare (3, 99, 29) && Find Duplicates (1, 8, 5) && Quality Check (1, 11, 0)
calibre 5.10.1 [64bit] embedded-python: True is64bit: True
Windows-8.1-6.3.9600 Windows ('64bit', 'WindowsPE')
('Windows', '8.1', '6.3.9600')
Python 3.8.5
Windows: ('8.1', '6.3.9600', '', 'Multiprocessor Free')
Interface language: None
Successfully initialized third party plugins: FanFicFare (3, 99, 29) && Find Duplicates (1, 8, 5) && Quality Check (1, 11, 0)
Turning on automatic hidpi scaling
devicePixelRatio: 1.0
logicalDpi: 96.0 x 96.0
physicalDpi: 100.86162790697674 x 101.07357512953367
Using calibre Qt style: True
[0.00] Starting up...
[0.00] Showing splash screen...
[0.33] splash screen shown
[0.33] Initializing db...
[0.41] db initialized
[0.41] Constructing main UI...
[3.39] main UI initialized...
[3.39] Hiding splash screen
Starting QuickView
FFF: DEBUG: 2021-02-16 20:34:53,378: calibre_plugins.fanficfare_plugin.fff_plugin(1110) : FanFicFare v3.99.29
FFF: DEBUG: 2021-02-16 20:34:53,393: calibre_plugins.fanficfare_plugin.fff_plugin(1231) : prep_download_loop url:
https://www.fanfiction.net/s/13821225/1/I-Dream-Of-You
FFF: INFO: 2021-02-16 20:34:53,393: calibre_plugins.fanficfare_plugin.prefs(217): Attempting to read settings from predecessor--FFDL
FFF: INFO: 2021-02-16 20:34:53,393: calibre_plugins.fanficfare_plugin.prefs(222): Using default settings
FFF: DEBUG: 2021-02-16 20:34:53,409: calibre_plugins.fanficfare_plugin.fanficfare.confi gurable(1043): 1configuration.get_browser_cache:None
FFF: DEBUG: 2021-02-16 20:34:53,409: calibre_plugins.fanficfare_plugin.fanficfare.confi gurable(977): use_cloudscraper:true
FFF: DEBUG: 2021-02-16 20:34:53,409: calibre_plugins.fanficfare_plugin.fanficfare.confi gurable(996): use_browser_cache:true
FFF: DEBUG: 2021-02-16 20:34:53,409: calibre_plugins.fanficfare_plugin.fanficfare.confi gurable(998): browser_cache_path:C:\Users\Toshiba C55-A5100\AppData\Local\Mozilla\Firefox\Profiles\h1yno njd.default-1611513187773\cache2
FFF: WARNING: 2021-02-16 20:34:53,409: calibre_plugins.fanficfare_plugin.fanficfare.confi gurable(1007): Failed to setup BrowserCache(Directory does not contain a known browser cache type: 'C:\Users\Toshiba C55-A5100\AppData\Local\Mozilla\Firefox\Profiles\h1yno njd.default-1611513187773\cache2')
FFF: ERROR: 2021-02-16 20:34:53,409: calibre_plugins.fanficfare_plugin.dialogs(721): Exception: {'title': 'Unknown', 'author_sort': ['Unknown'], 'author': ['Unknown'], 'comments': '', 'good': False, 'status': 'Error', 'showerror': True, 'calibre_id': None, 'begin': None, 'end': None, 'comment': "Directory does not contain a known browser cache type: 'C:\\Users\\Toshiba C55-A5100\\AppData\\Local\\Mozilla\\Firefox\\Profiles\ \h1ynonjd.default-1611513187773\\cache2'", 'url': 'https://www.fanfiction.net/s/13821225/1/I-Dream-Of-You', 'site': 'www.fanfiction.net', 'series': '', 'added': False, 'pubdate': None, 'publisher': None, 'uniqueurl': 'https://www.fanfiction.net/s/13821225/1/I-Dream-Of-You[None-None]', 'listorder': 0, 'collision': 'Add New Book'}

irectory does not contain a known browser cache type: 'C:\Users\Toshiba C55-A5100\AppData\Local\Mozilla\Firefox\Profiles\h1yno njd.default-1611513187773\cache2'
Traceback (most recent call last):
File "calibre_plugins.fanficfare_plugin.dialogs", line 708, in do_loop
File "calibre_plugins.fanficfare_plugin.fff_plugin" , line 1271, in prep_download_loop
File "calibre_plugins.fanficfare_plugin.fanficfare.conf igurable", line 1046, in get_browser_cache
File "calibre_plugins.fanficfare_plugin.fanficfare.conf igurable", line 1003, in get_fetcher
File "calibre_plugins.fanficfare_plugin.fanficfare.brow sercache.__init__", line 24, in __init__
calibre_plugins.fanficfare_plugin.fanficfare.brows ercache.basebrowsercache.BrowserCacheException: Directory does not contain a known browser cache type: 'C:\Users\Toshiba C55-A5100\AppData\Local\Mozilla\Firefox\Profiles\h1yno njd.default-1611513187773\cache2'
FFF: DEBUG: 2021-02-16 20:35:04,653: calibre_plugins.fanficfare_plugin.fff_plugin(1845) : Finished Adding/Updating 0 books.
FFF: DEBUG: 2021-02-16 20:35:04,653: calibre_plugins.fanficfare_plugin.fff_plugin(1848) : removed tdir
NOTE......
same machine same software ver works with EDGE
##browser_cache_path:C:\Users\Toshiba C55-A5100\AppData\Local\Mozilla\Firefox\Profiles\h1yno njd.default-1611513187773\cache2
browser_cache_path:C:\Users\Toshiba C55-A5100\AppData\Local\Microsoft\Edge\User Data\Default\Cache
just switched the comment lines to switch from one to the other
MZCacheView for firefox shows files in firefox cache directory
maybe this will help