not converting

[AcademicRoutine168]

DeDRM Plugin (v10.0.9 / v10.1.0 RC1)
kindle file not decrypting

ApplicationPaletteChange event ignored
Using calibre Qt style: True
ApplicationPaletteChange event received
calibre Debug log
calibre 7.16 embedded-python: True
Windows-10-10.0.22631-SP0 Windows ('64bit', 'WindowsPE')
('Windows', '10', '10.0.22631')
Python 3.11.5
Windows: ('10', '10.0.22631', 'SP0', 'Multiprocessor Free')
Interface language: None
EXE path: C:\Program Files\Calibre2\calibre-debug.exe
Successfully initialized third party plugins: Gather KFX-ZIP (from KFX Input) (2, 15, 0) && DeDRM (10, 0, 9) && Package KFX (from KFX Input) (2, 15, 0) && Consolidate All Library Metadata (2, 0, 46) && Goodreads (1, 8, 2) && KFX metadata reader (from KFX Input) (2, 15, 0) && From KFX (2, 15, 0) && KFX Input (2, 15, 0) && Set KFX metadata (from KFX Output) (2, 9, 0) && KFX Output (2, 9, 0) && ePub Extended Metadata {Writer} (0, 11, 2) && ePub Extended Metadata {Reader} (0, 11, 2) && ePub Extended Metadata (0, 11, 2)
calibre 7.16 embedded-python: True
Windows-10-10.0.22631-SP0 Windows ('64bit', 'WindowsPE')
('Windows', '10', '10.0.22631')
Python 3.11.5
Windows: ('10', '10.0.22631', 'SP0', 'Multiprocessor Free')
Interface language: None
EXE path: C:\Program Files\Calibre2\calibre-debug.exe
Successfully initialized third party plugins: Gather KFX-ZIP (from KFX Input) (2, 15, 0) && DeDRM (10, 0, 9) && Package KFX (from KFX Input) (2, 15, 0) && Consolidate All Library Metadata (2, 0, 46) && Goodreads (1, 8, 2) && KFX metadata reader (from KFX Input) (2, 15, 0) && From KFX (2, 15, 0) && KFX Input (2, 15, 0) && Set KFX metadata (from KFX Output) (2, 9, 0) && KFX Output (2, 9, 0) && ePub Extended Metadata {Writer} (0, 11, 2) && ePub Extended Metadata {Reader} (0, 11, 2) && ePub Extended Metadata (0, 11, 2)
QPA platform: windows
devicePixelRatio: 1.0
logicalDpi: 96.0 x 96.0
physicalDpi: 69.86819484240687 x 69.80152671755725
[0.00] Starting up...
[0.00] Showing splash screen...
[0.16] splash screen shown
[0.16] Initializing db...
[0.20] db initialized
[0.20] Constructing main UI...
[1.06] GUI main window shown
CALM: initialization_complete............
[1.11] main UI initialized...
[1.11] Hiding splash screen
Gather KFX-ZIP (from KFX Input) 2.15.0: Importing G:\backup\documents\My Kindle Content\B0CZKBJYLY_EBOK\B0CZKBJYLY_EBOK.azw
Gather KFX-ZIP (from KFX Input): Gathered 4 file(s) as C:\Users\user123\AppData\Local\Temp\calibre_bd4xz8if\xp77uv83.kfx-zip
DeDRM v10.0.9: Trying to decrypt xp77uv83.kfx-zip
Decrypting KFX-ZIP ebook: xp77uv83
Got DSN key from database default_key_1716845643
Found 1 keys to try after 0.4 seconds
Decrypting KFX DRM voucher: amzn1.drm-voucher.v1.f6ab98d4-27d8-4337-a06e-1238605b5b42.voucher
Traceback (most recent call last):
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 104, in decrypt_voucher
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 1394, in parse
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 103, in _assert
Exception: Unknown type encountered in envelope, expected VoucherEnvelope
Traceback (most recent call last):
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 104, in decrypt_voucher
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 1394, in parse
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 103, in _assert
Exception: Unknown type encountered in envelope, expected VoucherEnvelope
DeDRM v10.0.9: Failed to decrypt with error: Failed to decrypt KFX DRM voucher with any key
DeDRM v10.0.9: Looking for new default Kindle Key after 0.4 seconds
searching for kinfoFiles in C:\Users\user123\AppData\Local
Found K4PC 1.25+ kinf2018 file: C:\Users\user123\AppData\Local\Amazon\Kindle\storage.kinf2018
[11.05] splash screen hidden
[11.05] Started up in 11.05 seconds with 840 books
stdout+stderr from file dialog helper: [b'', b'']
piped data from file dialog helper: [b'y\x99N\xd7l\x9c\x16\xb8\x0b\x88\xb2\x89iL/\x8e\x95\x167(\xfaP3\xccAa\xd1ez\xffa\x0f', b'G:\backup\documents\My Kindle Content\B0CZKBJYLY_EBOK\B0CZKBJYLY_EBOK.azw']
Decrypted key file using IDString '3959630964' and UserName 'user123'
DeDRM v10.0.9: Found 1 new key
Decrypting KFX-ZIP ebook: xp77uv83
Got DSN key from database key_0
Found 1 keys to try after 0.5 seconds
Decrypting KFX DRM voucher: amzn1.drm-voucher.v1.f6ab98d4-27d8-4337-a06e-1238605b5b42.voucher
Traceback (most recent call last):
File "calibre_plugins.dedrm.init", line 931, in KindleMobiDecrypt
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\k4mobidedrm.py", line 203, in GetDecryptedBook
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 67, in processBook
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 111, in decrypt_voucher
Exception: Failed to decrypt KFX DRM voucher with any key

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 104, in decrypt_voucher
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 1394, in parse
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 103, in _assert
Exception: Unknown type encountered in envelope, expected VoucherEnvelope
Traceback (most recent call last):
File "calibre_plugins.dedrm.init", line 931, in KindleMobiDecrypt
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\k4mobidedrm.py", line 203, in GetDecryptedBook
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 67, in processBook
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 111, in decrypt_voucher
Exception: Failed to decrypt KFX DRM voucher with any key

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 104, in decrypt_voucher
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 1394, in parse
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 103, in _assert
Exception: Unknown type encountered in envelope, expected VoucherEnvelope
Traceback (most recent call last):
File "calibre_plugins.dedrm.init", line 931, in KindleMobiDecrypt
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\k4mobidedrm.py", line 203, in GetDecryptedBook
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 67, in processBook
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 111, in decrypt_voucher
Exception: Failed to decrypt KFX DRM voucher with any key

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "calibre_plugins.dedrm.init", line 965, in KindleMobiDecrypt
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\k4mobidedrm.py", line 203, in GetDecryptedBook
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 67, in processBook
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 111, in decrypt_voucher
Exception: Failed to decrypt KFX DRM voucher with any key
DeDRM v10.0.9: Ultimately failed to decrypt after 0.6 seconds. Read the FAQs at noDRM's repository: https://github.com/noDRM/DeDRM_tools/blob/master/FAQs.md
Running file type plugin DeDRM failed with traceback:
Traceback (most recent call last):
File "calibre_plugins.dedrm.init", line 931, in KindleMobiDecrypt
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\k4mobidedrm.py", line 203, in GetDecryptedBook
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 67, in processBook
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 111, in decrypt_voucher
Exception: Failed to decrypt KFX DRM voucher with any key

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "calibre\customize\ui.py", line 199, in _run_filetype_plugins
File "calibre_plugins.dedrm.init", line 1030, in run
File "calibre_plugins.dedrm.init", line 981, in KindleMobiDecrypt
calibre_plugins.dedrm.DeDRMError: DeDRM v10.0.9: Ultimately failed to decrypt after 0.6 seconds. Read the FAQs at noDRM's repository: https://github.com/noDRM/DeDRM_tools/blob/master/FAQs.md
Package KFX (from KFX Input) 2.15.0: Packaging C:\Users\user123\AppData\Local\Temp\calibre_bd4xz8if\xp77uv83.kfx-zip
Processing container: B0CZKBJYLY_EBOK.azw
Running file type plugin Package KFX (from KFX Input) failed with traceback:
Traceback (most recent call last):
File "calibre\customize\ui.py", line 199, in _run_filetype_plugins
File "calibre_plugins.kfx_input.package_filetype", line 23, in run
File "calibre_plugins.kfx_input.package_filetype", line 34, in package_kfx
File "calibre_plugins.kfx_input.kfxlib.yj_book", line 79, in convert_to_single_kfx
File "calibre_plugins.kfx_input.kfxlib.yj_book", line 212, in decode_book
File "calibre_plugins.kfx_input.kfxlib.yj_book", line 321, in get_container
calibre_plugins.kfx_input.kfxlib.utilities.KFXDRMError: Book container B0CZKBJYLY_EBOK.azw has DRM and cannot be converted
KFX metadata reader (from KFX Input) activated for C:\Users\user123\AppData\Local\Temp\calibre_bd4xz8if\b9fl2a2z_add_books\0\B0CZKBJYLY_EBOK.kfx-zip
Added Hand of Fate (Backyard Starship Book 21) to db in: 0.8
Added 1 books in 3.8 seconds
Worker Launch took: 0.03 seconds
Job: 0 Convert book 1 of 1 (Hand of Fate (Backyard Starship Book 21)) finished
Convert book 1 of 1 (Hand of Fate (Backyard Starship Book 21))
DeDRM v10.0.9: Trying to decrypt m5epzuyx.kfx-zip
Decrypting KFX-ZIP ebook: m5epzuyx
Got DSN key from database default_key_1716845643
Found 1 keys to try after 0.4 seconds
Decrypting KFX DRM voucher: amzn1.drm-voucher.v1.f6ab98d4-27d8-4337-a06e-1238605b5b42.voucher
Traceback (most recent call last):
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 104, in decrypt_voucher
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 1394, in parse
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 103, in _assert
Exception: Unknown type encountered in envelope, expected VoucherEnvelope
Traceback (most recent call last):
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 104, in decrypt_voucher
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 1394, in parse
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 103, in _assert
Exception: Unknown type encountered in envelope, expected VoucherEnvelope
DeDRM v10.0.9: Failed to decrypt with error: Failed to decrypt KFX DRM voucher with any key
DeDRM v10.0.9: Looking for new default Kindle Key after 0.4 seconds
searching for kinfoFiles in C:\Users\user123\AppData\Local
Found K4PC 1.25+ kinf2018 file: C:\Users\user123\AppData\Local\Amazon\Kindle\storage.kinf2018
Decrypted key file using IDString '3959630964' and UserName 'user123'
DeDRM v10.0.9: Found 1 new key
Decrypting KFX-ZIP ebook: m5epzuyx
Got DSN key from database key_0
Found 1 keys to try after 0.6 seconds
Decrypting KFX DRM voucher: amzn1.drm-voucher.v1.f6ab98d4-27d8-4337-a06e-1238605b5b42.voucher
Traceback (most recent call last):
File "calibre_plugins.dedrm.init", line 931, in KindleMobiDecrypt
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\k4mobidedrm.py", line 203, in GetDecryptedBook
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 67, in processBook
File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 111, in decrypt_voucher
Exception: Failed to decrypt KFX DRM voucher with any key

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 104, in decrypt_voucher
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 1394, in parse
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 103, in _assert
Exception: Unknown type encountered in envelope, expected VoucherEnvelope
Traceback (most recent call last):
  File "calibre_plugins.dedrm.__init__", line 931, in KindleMobiDecrypt
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\k4mobidedrm.py", line 203, in GetDecryptedBook
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 67, in processBook
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 111, in decrypt_voucher
Exception: Failed to decrypt KFX DRM voucher with any key

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 104, in decrypt_voucher
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 1394, in parse
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 103, in _assert
Exception: Unknown type encountered in envelope, expected VoucherEnvelope
Traceback (most recent call last):
  File "calibre_plugins.dedrm.__init__", line 931, in KindleMobiDecrypt
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\k4mobidedrm.py", line 203, in GetDecryptedBook
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 67, in processBook
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 111, in decrypt_voucher
Exception: Failed to decrypt KFX DRM voucher with any key

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "calibre_plugins.dedrm.__init__", line 965, in KindleMobiDecrypt
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\k4mobidedrm.py", line 203, in GetDecryptedBook
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 67, in processBook
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 111, in decrypt_voucher
Exception: Failed to decrypt KFX DRM voucher with any key
DeDRM v10.0.9: Ultimately failed to decrypt after 0.6 seconds. Read the FAQs at noDRM's repository: https://github.com/noDRM/DeDRM_tools/blob/master/FAQs.md
Running file type plugin DeDRM failed with traceback:
Traceback (most recent call last):
  File "calibre_plugins.dedrm.__init__", line 931, in KindleMobiDecrypt
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\k4mobidedrm.py", line 203, in GetDecryptedBook
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 67, in processBook
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 111, in decrypt_voucher
Exception: Failed to decrypt KFX DRM voucher with any key

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "calibre\customize\ui.py", line 199, in _run_filetype_plugins
  File "calibre_plugins.dedrm.__init__", line 1030, in run
  File "calibre_plugins.dedrm.__init__", line 981, in KindleMobiDecrypt
calibre_plugins.dedrm.DeDRMError: DeDRM v10.0.9: Ultimately failed to decrypt after 0.6 seconds. Read the FAQs at noDRM's repository: https://github.com/noDRM/DeDRM_tools/blob/master/FAQs.md
Conversion options changed from defaults:
  cover: 'C:\\Users\\user123\\AppData\\Local\\Temp\\calibre_bd4xz8if\\58fpe37e.jpeg'
  output_profile: 'kindle'
  read_metadata_from_opf: 'C:\\Users\\user123\\AppData\\Local\\Temp\\calibre_bd4xz8if\\gle2hbq7.opf'
  verbose: 2
Resolved conversion options
calibre version: 7.16.0
{'add_alt_text_to_img': False,
 'allow_conversion_with_errors': False,
 'asciiize': False,
 'author_sort': None,
 'authors': None,
 'base_font_size': 0.0,
 'book_producer': None,
 'change_justification': 'original',
 'chapter': "//*[((name()='h1' or name()='h2') and re:test(., "
            "'\\s*((chapter|book|section|part)\\s+)|((prolog|prologue|epilogue)(\\s+|$))', "
            "'i')) or @class = 'chapter']",
 'chapter_mark': 'pagebreak',
 'comments': None,
 'cover': 'C:\\Users\\user123\\AppData\\Local\\Temp\\calibre_bd4xz8if\\58fpe37e.jpeg',
 'debug_pipeline': None,
 'dehyphenate': True,
 'delete_blank_paragraphs': True,
 'disable_font_rescaling': False,
 'dont_compress': False,
 'duplicate_links_in_toc': False,
 'embed_all_fonts': False,
 'embed_font_family': None,
 'enable_heuristics': False,
 'expand_css': False,
 'extra_css': None,
 'extract_to': None,
 'filter_css': '',
 'fix_indents': True,
 'font_size_mapping': None,
 'format_scene_breaks': True,
 'html_unwrap_factor': 0.4,
 'input_encoding': None,
 'input_profile': <calibre.customize.profiles.InputProfile object at 0x0000024E50A751D0>,
 'insert_blank_line': False,
 'insert_blank_line_size': 0.5,
 'insert_metadata': False,
 'isbn': None,
 'italicize_common_cases': True,
 'keep_ligatures': False,
 'language': None,
 'level1_toc': None,
 'level2_toc': None,
 'level3_toc': None,
 'line_height': 0.0,
 'linearize_tables': False,
 'margin_bottom': 5.0,
 'margin_left': 5.0,
 'margin_right': 5.0,
 'margin_top': 5.0,
 'markup_chapter_headings': True,
 'max_toc_links': 50,
 'minimum_line_height': 120.0,
 'mobi_file_type': 'old',
 'mobi_ignore_margins': False,
 'mobi_keep_original_images': False,
 'mobi_toc_at_start': False,
 'no_chapters_in_toc': False,
 'no_inline_navbars': True,
 'no_inline_toc': False,
 'output_profile': <calibre.customize.profiles.KindleOutput object at 0x0000024E50A63150>,
 'page_breaks_before': '/',
 'personal_doc': '[PDOC]',
 'prefer_author_sort': False,
 'prefer_metadata_cover': False,
 'pretty_print': False,
 'pubdate': None,
 'publisher': None,
 'rating': None,
 'read_metadata_from_opf': 'C:\\Users\\user123\\AppData\\Local\\Temp\\calibre_bd4xz8if\\gle2hbq7.opf',
 'remove_fake_margins': True,
 'remove_first_image': False,
 'remove_paragraph_spacing': False,
 'remove_paragraph_spacing_indent_size': 1.5,
 'renumber_headings': True,
 'replace_scene_breaks': '',
 'search_replace': '[]',
 'series': None,
 'series_index': None,
 'share_not_sync': False,
 'smarten_punctuation': False,
 'sr1_replace': None,
 'sr1_search': None,
 'sr2_replace': None,
 'sr2_search': None,
 'sr3_replace': None,
 'sr3_search': None,
 'start_reading_at': None,
 'subset_embedded_fonts': False,
 'tags': None,
 'timestamp': None,
 'title': None,
 'title_sort': None,
 'toc_filter': None,
 'toc_threshold': 6,
 'toc_title': None,
 'transform_css_rules': '[]',
 'transform_html_rules': '[]',
 'unsmarten_punctuation': False,
 'unwrap_lines': True,
 'use_auto_toc': False,
 'verbose': 2}
DeDRM v10.0.9: Trying to decrypt m5epzuyx.kfx-zip
Decrypting KFX-ZIP ebook: m5epzuyx
Got DSN key from database default_key_1716845643
Found 1 keys to try after 0.0 seconds
Decrypting KFX DRM voucher: amzn1.drm-voucher.v1.f6ab98d4-27d8-4337-a06e-1238605b5b42.voucher
Traceback (most recent call last):
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 104, in decrypt_voucher
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 1394, in parse
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 103, in _assert
Exception: Unknown type encountered in envelope, expected VoucherEnvelope
Traceback (most recent call last):
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 104, in decrypt_voucher
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 1394, in parse
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 103, in _assert
Exception: Unknown type encountered in envelope, expected VoucherEnvelope
DeDRM v10.0.9: Failed to decrypt with error: Failed to decrypt KFX DRM voucher with any key
DeDRM v10.0.9: Looking for new default Kindle Key after 0.0 seconds
searching for kinfoFiles in C:\Users\user123\AppData\Local
Found K4PC 1.25+ kinf2018 file: C:\Users\user123\AppData\Local\Amazon\Kindle\storage\.kinf2018
Decrypted key file using IDString '3959630964' and UserName 'user123'
DeDRM v10.0.9: Found 1 new key
Decrypting KFX-ZIP ebook: m5epzuyx
Got DSN key from database key_0
Found 1 keys to try after 0.1 seconds
Decrypting KFX DRM voucher: amzn1.drm-voucher.v1.f6ab98d4-27d8-4337-a06e-1238605b5b42.voucher
Traceback (most recent call last):
  File "calibre_plugins.dedrm.__init__", line 931, in KindleMobiDecrypt
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\k4mobidedrm.py", line 203, in GetDecryptedBook
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 67, in processBook
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 111, in decrypt_voucher
Exception: Failed to decrypt KFX DRM voucher with any key

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 104, in decrypt_voucher
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 1394, in parse
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 103, in _assert
Exception: Unknown type encountered in envelope, expected VoucherEnvelope
Traceback (most recent call last):
  File "calibre_plugins.dedrm.__init__", line 931, in KindleMobiDecrypt
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\k4mobidedrm.py", line 203, in GetDecryptedBook
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 67, in processBook
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 111, in decrypt_voucher
Exception: Failed to decrypt KFX DRM voucher with any key

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 104, in decrypt_voucher
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 1394, in parse
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\ion.py", line 103, in _assert
Exception: Unknown type encountered in envelope, expected VoucherEnvelope
Traceback (most recent call last):
  File "calibre_plugins.dedrm.__init__", line 931, in KindleMobiDecrypt
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\k4mobidedrm.py", line 203, in GetDecryptedBook
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 67, in processBook
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 111, in decrypt_voucher
Exception: Failed to decrypt KFX DRM voucher with any key

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "calibre_plugins.dedrm.__init__", line 965, in KindleMobiDecrypt
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\k4mobidedrm.py", line 203, in GetDecryptedBook
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 67, in processBook
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 111, in decrypt_voucher
Exception: Failed to decrypt KFX DRM voucher with any key
DeDRM v10.0.9: Ultimately failed to decrypt after 0.1 seconds. Read the FAQs at noDRM's repository: https://github.com/noDRM/DeDRM_tools/blob/master/FAQs.md
Running file type plugin DeDRM failed with traceback:
Traceback (most recent call last):
  File "calibre_plugins.dedrm.__init__", line 931, in KindleMobiDecrypt
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\k4mobidedrm.py", line 203, in GetDecryptedBook
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 67, in processBook
  File "C:\Users\user123\AppData\Roaming\calibre\plugins\DeDRM.zip\kfxdedrm.py", line 111, in decrypt_voucher
Exception: Failed to decrypt KFX DRM voucher with any key

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "calibre\customize\ui.py", line 199, in _run_filetype_plugins
  File "calibre_plugins.dedrm.__init__", line 1030, in run
  File "calibre_plugins.dedrm.__init__", line 981, in KindleMobiDecrypt
calibre_plugins.dedrm.DeDRMError: DeDRM v10.0.9: Ultimately failed to decrypt after 0.1 seconds. Read the FAQs at noDRM's repository: https://github.com/noDRM/DeDRM_tools/blob/master/FAQs.md
InputFormatPlugin: KFX Input running
on C:\Users\user123\AppData\Local\Temp\calibre_bd4xz8if\m5epzuyx.kfx-zip
Software versions: KFX Input 2.15.0, calibre 7.16, Windows-10-10.0.22631-SP0
KFX Input plugin help is available at https://www.mobileread.com/forums/showthread.php?t=291290
Converting C:\Users\user123\AppData\Local\Temp\calibre_bd4xz8if\m5epzuyx.kfx-zip
Processing container: B0CZKBJYLY_EBOK.azw
Traceback (most recent call last):
  File "calibre_plugins.kfx_input.__init__", line 102, in convert
  File "calibre_plugins.kfx_input.kfxlib.yj_book", line 212, in decode_book
  File "calibre_plugins.kfx_input.kfxlib.yj_book", line 321, in get_container
calibre_plugins.kfx_input.kfxlib.utilities.KFXDRMError: Book container B0CZKBJYLY_EBOK.azw has DRM and cannot be converted

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "runpy.py", line 198, in _run_module_as_main
  File "runpy.py", line 88, in _run_code
  File "site.py", line 83, in <module>
  File "site.py", line 78, in main
  File "site.py", line 50, in run_entry_point
  File "calibre\utils\ipc\worker.py", line 215, in main
  File "calibre\gui2\convert\gui_conversion.py", line 38, in gui_convert_override
  File "calibre\gui2\convert\gui_conversion.py", line 25, in gui_convert
  File "calibre\ebooks\conversion\plumber.py", line 1129, in run
  File "calibre\customize\conversion.py", line 245, in __call__
  File "calibre_plugins.kfx_input.__init__", line 122, in convert
calibre.ebooks.DRMError: This book has DRM!

[ElleKayEm]

Use no later than Kindle for PC 2.4.0. Or use a method to get non-kfx files and that book will already be DRM-free.