OSError: dlopen(libgs.so, 6): image not found on macOS / homebrew

[cjw296]

I followed in installation instructions but getting this:

>>> tables = camelot.read_pdf(...pdf')
Traceback (most recent call last):
  File "lib/python3.7/site-packages/camelot/ext/ghostscript/_gsprint.py", line 251, in <module>
    libgs = cdll.LoadLibrary("libgs.so")
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/ctypes/__init__.py", line 434, in LoadLibrary
    return self._dlltype(name)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/ctypes/__init__.py", line 356, in __init__
    self._handle = _dlopen(self._name, mode)
OSError: dlopen(libgs.so, 6): image not found

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "lib/python3.7/site-packages/camelot/io.py", line 117, in read_pdf
    **kwargs
  File "lib/python3.7/site-packages/camelot/handlers.py", line 172, in parse
    p, suppress_stdout=suppress_stdout, layout_kwargs=layout_kwargs
  File "lib/python3.7/site-packages/camelot/parsers/lattice.py", line 403, in extract_tables
    self._generate_image()
  File "lib/python3.7/site-packages/camelot/parsers/lattice.py", line 212, in _generate_image
    from ..ext.ghostscript import Ghostscript
  File "lib/python3.7/site-packages/camelot/ext/ghostscript/__init__.py", line 24, in <module>
    from . import _gsprint as gs
  File "lib/python3.7/site-packages/camelot/ext/ghostscript/_gsprint.py", line 258, in <module>
    raise RuntimeError("Please make sure that Ghostscript is installed")
RuntimeError: Please make sure that Ghostscript is installed

Version information:

macOS Mojave 10.14.6

$ brew --version
Homebrew 2.2.5
Homebrew/homebrew-core (git revision 970e0; last commit 2020-02-04)
$ brew info ghostscript
ghostscript: stable 9.50 (bottled), HEAD
Interpreter for PostScript and PDF
https://www.ghostscript.com/
/usr/local/Cellar/ghostscript/9.50 (670 files, 82.3MB) *
  Poured from bottle on 2020-02-05 at 07:21:21
From: https://github.com/Homebrew/homebrew-core/blob/master/Formula/ghostscript.rb
==> Dependencies
Build: pkg-config ✘
Required: libtiff ✔
==> Options
--HEAD
	Install HEAD version
==> Analytics
install: 20,809 (30 days), 61,515 (90 days), 280,685 (365 days)
install-on-request: 10,344 (30 days), 28,532 (90 days), 116,038 (365 days)
build-error: 0 (30 days)

What's likely to be the problem here?