TypeError: combining() argument must be a unicode character, not str

[vitorfs]

https://sentry.io/organizations/simple-complex/issues/2650578099/?referrer=github_plugin

TypeError: combining() argument must be a unicode character, not str
(15 additional frame(s) were not displayed)
...
  File "bibtexparser/bparser.py", line 287, in _add_entry
    d = self.customization(d)
  File "bibtexparser/customization.py", line 507, in convert_to_unicode
    record[val] = latex_to_unicode(record[val])
  File "bibtexparser/latexenc.py", line 65, in latex_to_unicode
    string = _replace_all_latex(string, itertools.chain(
  File "bibtexparser/latexenc.py", line 53, in _replace_all_latex
    string = _replace_latex(string, l.rstrip(), u)
  File "bibtexparser/latexenc.py", line 35, in _replace_latex
    if unicodedata.combining(unicod):

An error occurred while trying to parse the bibtex file.