TypeError: unsupported operand type(s) for -: 'float' and 'str'

[n3h3m]

Seems the issue has come again #260

  File "/usr/local/lib/python3.7/site-packages/weasyprint/layout/blocks.py", line 55, in block_level_layout
    adjoining_margins)
  File "/usr/local/lib/python3.7/site-packages/weasyprint/layout/blocks.py", line 86, in block_level_layout_switch
    device_size, page_is_empty, absolute_boxes, fixed_boxes)
  File "/usr/local/lib/python3.7/site-packages/weasyprint/layout/flex.py", line 50, in flex_layout
    box.border_left_width - box.border_right_width)
TypeError: unsupported operand type(s) for -: 'float' and 'str'

Command to reproduce:

weasyprint https://www.techlila.com/compile-android-rom-from-source-code/ test.pdf

Issue happens at the latest release of Weasyprint.

nehem@nehem ~/Downloads> weasyprint --version
WeasyPrint version 44