[Python] why can't I add DejaVu font to fpdf in PyCharm?

I'm new to fpdf and python, so I'm sure this is probably something very simple, but I can't seem to add a utf-8 compatible font, in this case DejaVu. I have placed the font folder downloaded together with FPDF in just about every other folder on my mac running OS 10.15.7. I'm using PyCharm 2020.3 with python 3.9.

I get the following output:

/usr/local/bin/python3.9 /Users/brc/Documents/Python/AvenidasPython/FontTest.py

Traceback (most recent call last):
File "/Users/brc/Documents/Python/AvenidasPython/FontTest.py", line 5, in <module>
pdf.add_font('DejaVu', '', 'DejaVuSansCondensed.ttf', uni=True)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/fpdf/fpdf.py", line 577, in add_font
if (Path(parent) / fname).exists():
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/pathlib.py", line 1071, in __new__
self = cls._from_parts(args, init=False)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/pathlib.py", line 696, in _from_parts
drv, root, parts = self._parse_args(args)
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/pathlib.py", line 680, in _parse_args
a = os.fspath(a)
TypeError: expected str, bytes or os.PathLike object, not NoneType

Process finished with exit code 1


Originally the issue appeared in a more complex script, but I get the same error from the simplest of scripts:

from fpdf import FPDF

pdf = FPDF('L', 'mm', 'A4')
pdf.add_page()
pdf.add_font('DejaVu', '', 'DejaVuSansCondensed.ttf', uni=True)


It seems to me that this is something linear so I didn't bother contextualizing why I need this to work, but I can do so if required. Thanks in advance!

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