Error converting AZW3 to MOBI

gistfile1.txt

Convert book 1 of 1 (Beginning Python Programming: Learn Python Programming in 7 Days (Treading on Python Book 1))
Resolved conversion options
calibre version: 2.23.0
{'asciiize': False,
 'author_sort': None,
 'authors': None,
 'base_font_size': 0.0,
 'book_producer': None,
 'change_justification': u'original',
 'chapter': u"//*[((name()='h1' or name()='h2') and re:test(., '\\s*((chapter|book|section|part)\\s+)|((prolog|prologue|epilogue)(\\s+|$))', 'i')) or @class = 'chapter']",
 'chapter_mark': u'pagebreak',
 'comments': None,
 'cover': u'/var/folders/60/978ptjj52xd_zz4dm8j35ckc0000gn/T/calibre_2.23.0_tmp_2kS6vx/9pWjWH.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': u'',
 '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 0x1143eb050>,
 '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': u'both',
 'mobi_ignore_margins': False,
 'mobi_keep_original_images': False,
 'mobi_toc_at_start': False,
 'no_chapters_in_toc': False,
 'no_inline_navbars': False,
 'no_inline_toc': False,
 'output_profile': <calibre.customize.profiles.OutputProfile object at 0x1143eb410>,
 'page_breaks_before': u"//*[name()='h1' or name()='h2']",
 'personal_doc': u'[EBOK]',
 'prefer_author_sort': False,
 'prefer_metadata_cover': False,
 'pretty_print': False,
 'pubdate': None,
 'publisher': None,
 'rating': None,
 'read_metadata_from_opf': u'/var/folders/60/978ptjj52xd_zz4dm8j35ckc0000gn/T/calibre_2.23.0_tmp_2kS6vx/Bp5KTy.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': u'',
 '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,
 'unsmarten_punctuation': False,
 'unwrap_lines': True,
 'use_auto_toc': False,
 'verbose': 2}
InputFormatPlugin: MOBI Input running
on /var/folders/60/978ptjj52xd_zz4dm8j35ckc0000gn/T/calibre_2.23.0_tmp_2kS6vx/9KI7g1.azw3
Found KF8 MOBI of type 'standalone'
Extracting text...
Parsing all content...
Parsing text/part0033.html ...
Parsing text/part0018.html ...
Parsing text/part0026.html ...
Parsing text/part0013.html ...
Parsing text/part0006.html ...
Parsing text/part0000.html ...
Parsing text/part0032.html ...
Parsing text/part0007.html ...
Parsing text/part0017.html ...
Parsing styles/0001.css ...
Parsing text/part0016.html ...
Parsing text/part0024.html ...
Parsing text/part0012.html ...
Parsing text/part0008.html ...
Parsing text/part0023.html ...
Parsing text/part0009.html ...
Parsing text/part0031.html ...
Parsing text/part0025.html ...
Parsing text/part0003.html ...
Parsing text/part0014.html ...
Parsing text/part0022.html ...
Parsing text/part0030.html ...
Parsing text/part0010.html ...
Parsing text/part0002.html ...
Parsing text/part0027.html ...
Parsing text/part0011.html ...
Parsing text/part0021.html ...
Parsing text/part0029.html ...
Parsing text/part0020.html ...
Parsing text/part0028.html ...
Parsing text/part0004.html ...
Parsing text/part0001.html ...
Parsing text/part0034.html ...
Parsing text/part0015.html ...
Parsing text/part0005.html ...
Parsing text/part0019.html ...
Referenced file u'styles/XXXXXXXXXXXXXXXX' not found
Reading TOC from NCX...
Merging user specified metadata...
Detecting structure...
	Detected chapter: Ebook Formatting: KF8, Mobi & EPUB
Python function terminated unexpectedly: select_nth_last_child() takes exactly 3 arguments (2 given)
Flattening CSS and remapping font sizes...
Traceback (most recent call last):
  File "/Applications/calibre.app/Contents/Resources/Python/lib/python2.7/site.py", line 209, in main
    return run_entry_point()
  File "/Applications/calibre.app/Contents/Resources/Python/lib/python2.7/site.py", line 114, in run_entry_point
    return getattr(pmod, func)()
  File "site-packages/calibre/utils/ipc/worker.py", line 193, in main
  File "site-packages/calibre/gui2/convert/gui_conversion.py", line 31, in gui_convert_override
  File "site-packages/calibre/gui2/convert/gui_conversion.py", line 25, in gui_convert
  File "site-packages/calibre/ebooks/conversion/plumber.py", line 1155, in run
  File "site-packages/calibre/ebooks/oeb/transforms/flatcss.py", line 185, in __call__
  File "site-packages/calibre/ebooks/oeb/transforms/flatcss.py", line 264, in stylize_spine
  File "site-packages/calibre/ebooks/oeb/stylizer.py", line 183, in __init__
  File "site-packages/css_selectors/select.py", line 177, in __call__
  File "site-packages/css_selectors/select.py", line 195, in iterparsedselector
  File "site-packages/css_selectors/select.py", line 556, in select_pseudo
TypeError: select_nth_last_child() takes exactly 3 arguments (2 given)