TypeError: a bytes-like object is required, not 'str'

[xiaocuigit]

Traceback (most recent call last):
  File "/anaconda3/bin/pdf2txt.py", line 4, in <module>
    __import__('pkg_resources').run_script('pdfminer.six==20200402', 'pdf2txt.py')
  File "/anaconda3/lib/python3.6/site-packages/pkg_resources/__init__.py", line 666, in run_script
    self.require(requires)[0].run_script(script_name, ns)
  File "/anaconda3/lib/python3.6/site-packages/pkg_resources/__init__.py", line 1462, in run_script
    exec(code, namespace, namespace)
  File "/anaconda3/lib/python3.6/site-packages/pdfminer.six-20200402-py3.6.egg/EGG-INFO/scripts/pdf2txt.py", line 192, in <module>
    sys.exit(main())
  File "/anaconda3/lib/python3.6/site-packages/pdfminer.six-20200402-py3.6.egg/EGG-INFO/scripts/pdf2txt.py", line 186, in main
    outfp = extract_text(**vars(A))
  File "/anaconda3/lib/python3.6/site-packages/pdfminer.six-20200402-py3.6.egg/EGG-INFO/scripts/pdf2txt.py", line 57, in extract_text
    pdfminer.high_level.extract_text_to_fp(fp, **locals())
  File "/anaconda3/lib/python3.6/site-packages/pdfminer.six-20200402-py3.6.egg/pdfminer/high_level.py", line 86, in extract_text_to_fp
    interpreter.process_page(page)
  File "/anaconda3/lib/python3.6/site-packages/pdfminer.six-20200402-py3.6.egg/pdfminer/pdfinterp.py", line 896, in process_page
    self.device.end_page(page)
  File "/anaconda3/lib/python3.6/site-packages/pdfminer.six-20200402-py3.6.egg/pdfminer/converter.py", line 51, in end_page
    self.receive_layout(self.cur_item)
  File "/anaconda3/lib/python3.6/site-packages/pdfminer.six-20200402-py3.6.egg/pdfminer/converter.py", line 442, in receive_layout
    render(ltpage)
  File "/anaconda3/lib/python3.6/site-packages/pdfminer.six-20200402-py3.6.egg/pdfminer/converter.py", line 392, in render
    render(child)
  File "/anaconda3/lib/python3.6/site-packages/pdfminer.six-20200402-py3.6.egg/pdfminer/converter.py", line 434, in render
    render(child)
  File "/anaconda3/lib/python3.6/site-packages/pdfminer.six-20200402-py3.6.egg/pdfminer/converter.py", line 426, in render
    render(child)
  File "/anaconda3/lib/python3.6/site-packages/pdfminer.six-20200402-py3.6.egg/pdfminer/converter.py", line 438, in render
    item.size)
  File "/anaconda3/lib/python3.6/site-packages/pdfminer.six-20200402-py3.6.egg/pdfminer/converter.py", line 362, in put_text
    fontname_without_subset_tag = font
name.split('+')[-1]
TypeError: a bytes-like object is required, not 'str'

This is the test pdf file: dddd.pdf
I use the command: pdf2txt.py dddd.pdf -t html -o ddd.html

[pietermarsman]

I can replicate this.

Only happens when -t html is used, so probably something is wrong in the HtmlConverter.