Issue with matplotlib locks when using multiprocessing

[multiwavelength]

multiprocessing.pool.RemoteTraceback: 
"""
Traceback (most recent call last):
  File "/usr/lib/python3.8/multiprocessing/pool.py", line 125, in worker
    result = (True, func(*args, **kwds))
  File "/usr/lib/python3.8/multiprocessing/pool.py", line 51, in starmapstar
    return list(itertools.starmap(args[0], args[1]))
  File "/home/andra/.local/lib/python3.8/site-packages/gleam/main.py", line 108, in run_main
    pg.plot_spectrum(
  File "/home/andra/.local/lib/python3.8/site-packages/gleam/plot_gaussian.py", line 240, in plot_spectrum
    fig.savefig(f"{basename}.png", format="png", bbox_inches="tight")
  File "/home/andra/.local/lib/python3.8/site-packages/matplotlib/figure.py", line 2311, in savefig
    self.canvas.print_figure(fname, **kwargs)
  File "/home/andra/.local/lib/python3.8/site-packages/matplotlib/backend_bases.py", line 2193, in print_figure
    self.figure.draw(renderer)
  File "/home/andra/.local/lib/python3.8/site-packages/matplotlib/artist.py", line 41, in draw_wrapper
    return draw(artist, renderer, *args, **kwargs)
  File "/home/andra/.local/lib/python3.8/site-packages/matplotlib/figure.py", line 1863, in draw
    mimage._draw_list_compositing_images(
  File "/home/andra/.local/lib/python3.8/site-packages/matplotlib/image.py", line 131, in _draw_list_compositing_images
    a.draw(renderer)
  File "/home/andra/.local/lib/python3.8/site-packages/matplotlib/artist.py", line 41, in draw_wrapper
    return draw(artist, renderer, *args, **kwargs)
  File "/home/andra/.local/lib/python3.8/site-packages/matplotlib/cbook/deprecation.py", line 411, in wrapper
    return func(*inner_args, **inner_kwargs)
  File "/home/andra/.local/lib/python3.8/site-packages/matplotlib/axes/_base.py", line 2747, in draw
    mimage._draw_list_compositing_images(renderer, self, artists)
  File "/home/andra/.local/lib/python3.8/site-packages/matplotlib/image.py", line 131, in _draw_list_compositing_images
    a.draw(renderer)
  File "/home/andra/.local/lib/python3.8/site-packages/matplotlib/artist.py", line 41, in draw_wrapper
    return draw(artist, renderer, *args, **kwargs)
  File "/home/andra/.local/lib/python3.8/site-packages/matplotlib/axis.py", line 1165, in draw
    ticklabelBoxes, ticklabelBoxes2 = self._get_tick_bboxes(ticks_to_draw,
  File "/home/andra/.local/lib/python3.8/site-packages/matplotlib/axis.py", line 1091, in _get_tick_bboxes
    return ([tick.label1.get_window_extent(renderer)
  File "/home/andra/.local/lib/python3.8/site-packages/matplotlib/axis.py", line 1091, in <listcomp>
    return ([tick.label1.get_window_extent(renderer)
  File "/home/andra/.local/lib/python3.8/site-packages/matplotlib/text.py", line 902, in get_window_extent
    bbox, info, descent = self._get_layout(self._renderer)
  File "/home/andra/.local/lib/python3.8/site-packages/matplotlib/text.py", line 295, in _get_layout
    w, h, d = renderer.get_text_width_height_descent(
  File "/home/andra/.local/lib/python3.8/site-packages/matplotlib/backends/backend_agg.py", line 227, in get_text_width_height_descent
    w, h, d = texmanager.get_text_width_height_descent(
  File "/home/andra/.local/lib/python3.8/site-packages/matplotlib/texmanager.py", line 423, in get_text_width_height_descent
    dvifile = self.make_dvi(tex, fontsize)
  File "/home/andra/.local/lib/python3.8/site-packages/matplotlib/texmanager.py", line 309, in make_dvi
    self._run_checked_subprocess(
  File "/usr/lib/python3.8/contextlib.py", line 120, in __exit__
    next(self.gen)
  File "/home/andra/.local/lib/python3.8/site-packages/matplotlib/cbook/__init__.py", line 1814, in _lock_path
    lock_path.unlink()
  File "/usr/lib/python3.8/pathlib.py", line 1321, in unlink
    self._accessor.unlink(self)
FileNotFoundError: [Errno 2] No such file or directory: '/home/andra/.cache/matplotlib/tex.cache/7b049115a0b65bb660d58d081a8c2c63.tex.matplotlib-lock'
"""

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/home/andra/.local/bin/gleam", line 8, in <module>
    sys.exit(pipeline())
  File "/home/andra/.local/lib/python3.8/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/home/andra/.local/lib/python3.8/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/home/andra/.local/lib/python3.8/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/home/andra/.local/lib/python3.8/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/home/andra/.local/lib/python3.8/site-packages/gleam/__init__.py", line 136, in pipeline
    p.starmap(gleam.main.run_main, unique_sources)
  File "/usr/lib/python3.8/multiprocessing/pool.py", line 372, in starmap
    return self._map_async(func, iterable, starmapstar, chunksize).get()
  File "/usr/lib/python3.8/multiprocessing/pool.py", line 771, in get
    raise self._value
FileNotFoundError: [Errno 2] No such file or directory: '/home/andra/.cache/matplotlib/tex.cache/7b049115a0b65bb660d58d081a8c2c63.tex.matplotlib-lock'
Command exited with non-zero status 1