AttributeError: 'BlockReplacedBox' object has no attribute 'copy_with_children' #836

nathandem · 2019-03-27T12:08:06Z

Hi,

For of all thanks for this great library, it really helps :)

For context, I ran into this exception after integrating a large css in my html. The template I have already had a specific css file (that I included in the <head> section of the page), also I passed it an additional stylesheet using the CSS class. Both were rendered fine.
To benefit from the base css style of the site of my company (fonts, etc), I decided to import a large css file as said above but I ran into this exception.

I think the problem comes from the lib, because it works fine when I render the same page on the browser (I mean passing the same context, styling but rendering locally).

The exception and its trace:

Traceback (most recent call last):
  File "/Users/nathan/.virtualenvs/bureauxlocaux/lib/python3.7/site-packages/django/core/handlers/exception.py", line 35, in inner
    response = get_response(request)
  File "/Users/nathan/.virtualenvs/bureauxlocaux/lib/python3.7/site-packages/django/core/handlers/base.py", line 128, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "/Users/nathan/.virtualenvs/bureauxlocaux/lib/python3.7/site-packages/django/core/handlers/base.py", line 126, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/Users/nathan/dev/bureauxlocaux/bureauxlocaux/apps/listings/views.py", line 364, in get_listing_pdf
    main_doc = html.render(stylesheets=[CSS(string=content_print_layout)])
  File "/Users/nathan/.virtualenvs/bureauxlocaux/lib/python3.7/site-packages/weasyprint/__init__.py", line 168, in render
    font_config)
  File "/Users/nathan/.virtualenvs/bureauxlocaux/lib/python3.7/site-packages/weasyprint/document.py", line 366, in _render
    [Page(p, enable_hinting) for p in page_boxes],
  File "/Users/nathan/.virtualenvs/bureauxlocaux/lib/python3.7/site-packages/weasyprint/document.py", line 366, in <listcomp>
    [Page(p, enable_hinting) for p in page_boxes],
  File "/Users/nathan/.virtualenvs/bureauxlocaux/lib/python3.7/site-packages/weasyprint/layout/__init__.py", line 133, in layout_document
    context, root_box, html, cascaded_styles, computed_styles, pages))
  File "/Users/nathan/.virtualenvs/bureauxlocaux/lib/python3.7/site-packages/weasyprint/layout/pages.py", line 807, in make_all_pages
    i, context, root_box, html, cascaded_styles, computed_styles)
  File "/Users/nathan/.virtualenvs/bureauxlocaux/lib/python3.7/site-packages/weasyprint/layout/pages.py", line 744, in remake_page
    page_number, page_state)
  File "/Users/nathan/.virtualenvs/bureauxlocaux/lib/python3.7/site-packages/weasyprint/layout/pages.py", line 555, in make_page
    positioned_boxes, positioned_boxes, adjoining_margins)
  File "/Users/nathan/.virtualenvs/bureauxlocaux/lib/python3.7/site-packages/weasyprint/layout/blocks.py", line 64, in block_level_layout
    adjoining_margins)
  File "/Users/nathan/.virtualenvs/bureauxlocaux/lib/python3.7/site-packages/weasyprint/layout/blocks.py", line 80, in block_level_layout_switch
    adjoining_margins)
  File "/Users/nathan/.virtualenvs/bureauxlocaux/lib/python3.7/site-packages/weasyprint/layout/blocks.py", line 134, in block_box_layout
    page_is_empty, absolute_boxes, fixed_boxes, adjoining_margins)
  File "/Users/nathan/.virtualenvs/bureauxlocaux/lib/python3.7/site-packages/weasyprint/layout/blocks.py", line 515, in block_container_layout
    adjoining_margins)
  File "/Users/nathan/.virtualenvs/bureauxlocaux/lib/python3.7/site-packages/weasyprint/layout/blocks.py", line 64, in block_level_layout
    adjoining_margins)
  File "/Users/nathan/.virtualenvs/bureauxlocaux/lib/python3.7/site-packages/weasyprint/layout/blocks.py", line 80, in block_level_layout_switch
    adjoining_margins)
  File "/Users/nathan/.virtualenvs/bureauxlocaux/lib/python3.7/site-packages/weasyprint/layout/blocks.py", line 134, in block_box_layout
    page_is_empty, absolute_boxes, fixed_boxes, adjoining_margins)
  File "/Users/nathan/.virtualenvs/bureauxlocaux/lib/python3.7/site-packages/weasyprint/layout/blocks.py", line 515, in block_container_layout
    adjoining_margins)
  File "/Users/nathan/.virtualenvs/bureauxlocaux/lib/python3.7/site-packages/weasyprint/layout/blocks.py", line 64, in block_level_layout
    adjoining_margins)
  File "/Users/nathan/.virtualenvs/bureauxlocaux/lib/python3.7/site-packages/weasyprint/layout/blocks.py", line 80, in block_level_layout_switch
    adjoining_margins)
  File "/Users/nathan/.virtualenvs/bureauxlocaux/lib/python3.7/site-packages/weasyprint/layout/blocks.py", line 134, in block_box_layout
    page_is_empty, absolute_boxes, fixed_boxes, adjoining_margins)
  File "/Users/nathan/.virtualenvs/bureauxlocaux/lib/python3.7/site-packages/weasyprint/layout/blocks.py", line 515, in block_container_layout
    adjoining_margins)
  File "/Users/nathan/.virtualenvs/bureauxlocaux/lib/python3.7/site-packages/weasyprint/layout/blocks.py", line 64, in block_level_layout
    adjoining_margins)
  File "/Users/nathan/.virtualenvs/bureauxlocaux/lib/python3.7/site-packages/weasyprint/layout/blocks.py", line 80, in block_level_layout_switch
    adjoining_margins)
  File "/Users/nathan/.virtualenvs/bureauxlocaux/lib/python3.7/site-packages/weasyprint/layout/blocks.py", line 134, in block_box_layout
    page_is_empty, absolute_boxes, fixed_boxes, adjoining_margins)
  File "/Users/nathan/.virtualenvs/bureauxlocaux/lib/python3.7/site-packages/weasyprint/layout/blocks.py", line 515, in block_container_layout
    adjoining_margins)
  File "/Users/nathan/.virtualenvs/bureauxlocaux/lib/python3.7/site-packages/weasyprint/layout/blocks.py", line 64, in block_level_layout
    adjoining_margins)
  File "/Users/nathan/.virtualenvs/bureauxlocaux/lib/python3.7/site-packages/weasyprint/layout/blocks.py", line 95, in block_level_layout_switch
    device_size, page_is_empty, absolute_boxes, fixed_boxes)
  File "/Users/nathan/.virtualenvs/bureauxlocaux/lib/python3.7/site-packages/weasyprint/layout/flex.py", line 132, in flex_layout
    new_child = child.copy_with_children(child.children)
AttributeError: 'BlockReplacedBox' object has no attribute 'copy_with_children'

Here are the local variables around the exception:

absolute_boxes | []
available_cross_space | 659.8638550381396
available_main_space | 627.7996850393702
axis | 'width'
blocks | <module 'weasyprint.layout.blocks' from '/Users/nathan/.virtualenvs/bureauxlocaux/lib/python3.7/site-packages/weasyprint/layout/blocks.py'>
box | <FlexBox div>
child | <BlockReplacedBox img>
child_skip_stack | None
children | [<BlockBox h2>, <BlockReplacedBox img>]
containing_block | <BlockBox div>
content_size | 78.83984375
context | <weasyprint.layout.LayoutContext object at 0x12286dd68>
cross | 'height'
device_size | (793.7007874015749, 1122.5196850393702)
fixed_boxes | []
flex_basis | 'content'
main_flex_direction | 'width'
main_space | 659.8638550381396
margin_bottom | 0
margin_left | 0
margin_right | 0
margin_top | 0
max_position_y | 1028.0314960629921
new_child | <BlockBox h2>
original_skip_stack | None
page_is_empty | False
parent_box | <FlexBox div>
preferred | <module 'weasyprint.layout.preferred' from '/Users/nathan/.virtualenvs/bureauxlocaux/lib/python3.7/site-packages/weasyprint/layout/preferred.py'>
resume_at | None
skip_stack | None
specified_size | inf

In can provide the html if it helps (but the problem seems to be generic). Concerning the large css however, it can't really copy-paste it here because it is too large (+10k lines after preprocessing :p).

Thanks!

The text was updated successfully, but these errors were encountered:

liZe · 2019-03-27T12:34:55Z

Hi,

Hello

For of all thanks for this great library, it really helps :)

You're welcome!

I think the problem comes from the lib,

You're right, and I have good news: it's already been fixed in e487a98! You can try the current master branch and tell me if it fixes this crash.

nathandem · 2019-03-27T13:28:24Z

I confirm that it works fine 👍

Do you plan to release master in the near future in pypi?

liZe · 2019-03-27T13:30:25Z

I confirm that it works fine

🎉

Do you plan to release master in the near future in pypi?

Probably not before a couple of weeks. Before that, you can install the current master branch with pip install git+https://github.com/Kozea/WeasyPrint.git.

Version 50 ---------- Released on 2019-09-19. New features: * `#209 <https://github.com/Kozea/WeasyPrint/issues/209>`_: Make ``break-*`` properties work inside tables * `#661 <https://github.com/Kozea/WeasyPrint/issues/661>`_: Make blocks with ``overflow: auto`` grow to include floating children Bug fixes: * `#945 <https://github.com/Kozea/WeasyPrint/issues/945>`_: Don't break pages between a list item and its marker * `#727 <https://github.com/Kozea/WeasyPrint/issues/727>`_: Avoid tables lost between pages * `#831 <https://github.com/Kozea/WeasyPrint/issues/831>`_: Ignore auto margins on flex containers * `#923 <https://github.com/Kozea/WeasyPrint/issues/923>`_: Fix a couple of crashes when splitting a line twice * `#896 <https://github.com/Kozea/WeasyPrint/issues/896>`_: Fix skip stack order when using a reverse flex direction Contributors: - grewn0uille - Guillaume Ayoub Version 49 ---------- Released on 2019-09-11. Performance: * Speed and memory use have been largely improved. New features: * `#700 <https://github.com/Kozea/WeasyPrint/issues/700>`_: Handle ``::marker`` pseudo-selector * `135dc06c <https://github.com/Kozea/WeasyPrint/commit/135dc06c>`_: Handle ``recto`` and ``verso`` parameters for page breaks * `#907 <https://github.com/Kozea/WeasyPrint/pull/907>`_: Provide a clean way to build layout contexts Bug fixes: * `#937 <https://github.com/Kozea/WeasyPrint/issues/937>`_: Fix rendering of tables with empty lines and rowspans * `#897 <https://github.com/Kozea/WeasyPrint/issues/897>`_: Don't crash when small columns are wrapped in absolute blocks * `#913 <https://github.com/Kozea/WeasyPrint/issues/913>`_: Fix a test about gradient colors * `#924 <https://github.com/Kozea/WeasyPrint/pull/924>`_: Fix title for document with attachments * `#917 <https://github.com/Kozea/WeasyPrint/issues/917>`_: Fix tests with Pango 1.44 * `#919 <https://github.com/Kozea/WeasyPrint/issues/919>`_: Fix padding and margin management for column flex boxes * `#901 <https://github.com/Kozea/WeasyPrint/issues/901>`_: Fix width of replaced boxes with no intrinsic width * `#906 <https://github.com/Kozea/WeasyPrint/issues/906>`_: Don't respect table cell width when content doesn't fit * `#927 <https://github.com/Kozea/WeasyPrint/pull/927>`_: Don't use deprecated ``logger.warn`` anymore * `a8662794 <https://github.com/Kozea/WeasyPrint/commit/a8662794>`_: Fix margin collapsing between caption and table wrapper * `87d9e84f <https://github.com/Kozea/WeasyPrint/commit/87d9e84f>`_: Avoid infinite loops when rendering columns * `789b80e6 <https://github.com/Kozea/WeasyPrint/commit/789b80e6>`_: Only use in flow children to set columns height * `615e298a <https://github.com/Kozea/WeasyPrint/commit/615e298a>`_: Don't include floating elements each time we try to render a column * `48d8632e <https://github.com/Kozea/WeasyPrint/commit/48d8632e>`_: Avoid not in flow children to compute column height * `e7c452ce <https://github.com/Kozea/WeasyPrint/commit/e7c452ce>`_: Fix collapsing margins for columns * `fb0887cf <https://github.com/Kozea/WeasyPrint/commit/fb0887cf>`_: Fix crash when using currentColor in gradients * `f66df067 <https://github.com/Kozea/WeasyPrint/commit/f66df067>`_: Don't crash when using ex units in word-spacing in letter-spacing * `c790ff20 <https://github.com/Kozea/WeasyPrint/commit/c790ff20>`_: Don't crash when properties needing base URL use var functions * `d63eac31 <https://github.com/Kozea/WeasyPrint/commit/d63eac31>`_: Don't crash with object-fit: non images with no intrinsic size Documentation: * `#900 <https://github.com/Kozea/WeasyPrint/issues/900>`_: Add documentation about semantic versioning * `#692 <https://github.com/Kozea/WeasyPrint/issues/692>`_: Add a snippet about PDF magnification * `#899 <https://github.com/Kozea/WeasyPrint/pull/899>`_: Add .NET wrapper link * `#893 <https://github.com/Kozea/WeasyPrint/pull/893>`_: Fixed wrong nested list comprehension example * `#902 <https://github.com/Kozea/WeasyPrint/pull/902>`_: Add ``state`` to the ``make_bookmark_tree`` documentation * `#921 <https://github.com/Kozea/WeasyPrint/pull/921>`_: Fix typos in the documentation * `#328 <https://github.com/Kozea/WeasyPrint/issues/328>`_: Add CSS sample for forms Contributors: - grewn0uille - Guillaume Ayoub - Raphael Gaschignard - Stani - Szmen - Thomas Dexter - Tontyna Version 48 ---------- Released on 2019-07-08. Dependencies: * CairoSVG 2.4.0+ is now needed New features: * `#891 <https://github.com/Kozea/WeasyPrint/pull/891>`_: Handle ``text-overflow`` * `#878 <https://github.com/Kozea/WeasyPrint/pull/878>`_: Handle ``column-span`` * `#855 <https://github.com/Kozea/WeasyPrint/pull/855>`_: Handle all the ``text-decoration`` features * `#238 <https://github.com/Kozea/WeasyPrint/issues/238>`_: Don't repeat background images when it's not needed * `#875 <https://github.com/Kozea/WeasyPrint/issues/875>`_: Handle ``object-fit`` and ``object-position`` * `#870 <https://github.com/Kozea/WeasyPrint/issues/870>`_: Handle ``bookmark-state`` Bug fixes: * `#686 <https://github.com/Kozea/WeasyPrint/issues/686>`_: Fix column balance when children are not inline * `#885 <https://github.com/Kozea/WeasyPrint/issues/885>`_: Actually use the content box to resolve flex items percentages * `#867 <https://github.com/Kozea/WeasyPrint/issues/867>`_: Fix rendering of KaTeX output, including (1) set row baseline of tables when no cells are baseline-aligned, (2) set baseline for inline tables, (3) don't align lines larger than their parents, (4) force CairoSVG to respect image size defined by CSS. * `#873 <https://github.com/Kozea/WeasyPrint/issues/873>`_: Set a minimum height for empty list elements with outside marker * `#811 <https://github.com/Kozea/WeasyPrint/issues/811>`_: Don't use translations to align flex items * `#851 <https://github.com/Kozea/WeasyPrint/issues/851>`_, `#860 <https://github.com/Kozea/WeasyPrint/issues/860>`_: Don't cut pages when content overflows a very little bit * `#862 <https://github.com/Kozea/WeasyPrint/issues/862>`_: Don't crash when using UTC dates in metadata Documentation: * `#854 <https://github.com/Kozea/WeasyPrint/issues/854>`_: Add a "Tips & Tricks" section Contributors: - Gabriel Corona - Guillaume Ayoub - Manuel Barkhau - Nathan de Maestri - grewn0uille - theopeek Version 47 ---------- Released on 2019-04-12. New features: * `#843 <https://github.com/Kozea/WeasyPrint/pull/843>`_: Handle CSS variables * `#846 <https://github.com/Kozea/WeasyPrint/pull/846>`_: Handle ``:nth()`` page selector * `#847 <https://github.com/Kozea/WeasyPrint/pull/847>`_: Allow users to use a custom SSL context for HTTP requests Bug fixes: * `#797 <https://github.com/Kozea/WeasyPrint/issues/797>`_: Fix underlined justified text * `#836 <https://github.com/Kozea/WeasyPrint/issues/836>`_: Fix crash when flex items are replaced boxes * `#835 <https://github.com/Kozea/WeasyPrint/issues/835>`_: Fix ``margin-break: auto`` Version 46 ---------- Released on 2019-03-20. New features: * `#771 <https://github.com/Kozea/WeasyPrint/issues/771>`_: Handle ``box-decoration-break`` * `#115 <https://github.com/Kozea/WeasyPrint/issues/115>`_: Handle ``margin-break`` * `#821 <https://github.com/Kozea/WeasyPrint/issues/821>`_: Continuous integration includes tests on Windows Bug fixes: * `#765 <https://github.com/Kozea/WeasyPrint/issues/765>`_, `#754 <https://github.com/Kozea/WeasyPrint/issues/754>`_, `#800 <https://github.com/Kozea/WeasyPrint/issues/800>`_: Fix many crashes related to the flex layout * `#783 <https://github.com/Kozea/WeasyPrint/issues/783>`_: Fix a couple of crashes with strange texts * `#827 <https://github.com/Kozea/WeasyPrint/pull/827>`_: Named strings and counters are case-sensitive * `#823 <https://github.com/Kozea/WeasyPrint/pull/823>`_: Shrink min/max-height/width according to box-sizing * `#728 <https://github.com/Kozea/WeasyPrint/issues/728>`_, `#171 <https://github.com/Kozea/WeasyPrint/issues/171>`_: Don't crash when fixed boxes are nested * `#610 <https://github.com/Kozea/WeasyPrint/issues/610>`_, `#828 <https://github.com/Kozea/WeasyPrint/issues/828>`_: Don't crash when preformatted text lines end with a space * `#808 <https://github.com/Kozea/WeasyPrint/issues/808>`_, `#387 <https://github.com/Kozea/WeasyPrint/issues/387>`_: Fix position of some images * `#813 <https://github.com/Kozea/WeasyPrint/issues/813>`_: Don't crash when long preformatted text lines end with ``\n`` Documentation: * `#815 <https://github.com/Kozea/WeasyPrint/pull/815>`_: Add documentation about custom ``url_fetcher``

liZe added the crash Problems preventing documents from being rendered label Mar 27, 2019

liZe added this to the 47 milestone Mar 27, 2019

liZe closed this as completed Mar 27, 2019

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AttributeError: 'BlockReplacedBox' object has no attribute 'copy_with_children' #836

AttributeError: 'BlockReplacedBox' object has no attribute 'copy_with_children' #836

nathandem commented Mar 27, 2019

liZe commented Mar 27, 2019

nathandem commented Mar 27, 2019

liZe commented Mar 27, 2019

AttributeError: 'BlockReplacedBox' object has no attribute 'copy_with_children' #836

AttributeError: 'BlockReplacedBox' object has no attribute 'copy_with_children' #836

Comments

nathandem commented Mar 27, 2019

liZe commented Mar 27, 2019

nathandem commented Mar 27, 2019

liZe commented Mar 27, 2019