---> 84     plt.savefig("figure.pdf")

~/anaconda3/lib/python3.8/site-packages/matplotlib/pyplot.py in savefig(*args, **kwargs)
    956 def savefig(*args, **kwargs):
    957     fig = gcf()
--> 958     res = fig.savefig(*args, **kwargs)
    959     fig.canvas.draw_idle()   # need this if 'transparent=True' to reset colors
    960     return res

~/anaconda3/lib/python3.8/site-packages/matplotlib/figure.py in savefig(self, fname, transparent, **kwargs)
   3010                         ax.patch._cm_set(facecolor='none', edgecolor='none'))
   3011 
-> 3012             self.canvas.print_figure(fname, **kwargs)
   3013 
   3014     def ginput(self, n=1, timeout=30, show_clicks=True,

~/anaconda3/lib/python3.8/site-packages/matplotlib/backend_bases.py in print_figure(self, filename, dpi, facecolor, edgecolor, orientation, format, bbox_inches, pad_inches, bbox_extra_artists, backend, **kwargs)
   2312                 # force the figure dpi to 72), so we need to set it again here.
   2313                 with cbook._setattr_cm(self.figure, dpi=dpi):
-> 2314                     result = print_method(
   2315                         filename,
   2316                         facecolor=facecolor,

~/anaconda3/lib/python3.8/site-packages/matplotlib/backend_bases.py in wrapper(*args, **kwargs)
   1641             kwargs.pop(arg)
   1642 
-> 1643         return func(*args, **kwargs)
   1644 
   1645     return wrapper

~/anaconda3/lib/python3.8/site-packages/matplotlib/_api/deprecation.py in wrapper(*inner_args, **inner_kwargs)
    384             # Early return in the simple, non-deprecated case (much faster than
    385             # calling bind()).
--> 386             return func(*inner_args, **inner_kwargs)
    387         arguments = signature.bind(*inner_args, **inner_kwargs).arguments
    388         if is_varargs and arguments.get(name):

~/anaconda3/lib/python3.8/site-packages/matplotlib/backends/backend_pdf.py in print_pdf(self, filename, dpi, bbox_inches_restore, metadata)
   2786             renderer.finalize()
   2787             if not isinstance(filename, PdfPages):
-> 2788                 file.finalize()
   2789         finally:
   2790             if isinstance(filename, PdfPages):  # finish off this page

~/anaconda3/lib/python3.8/site-packages/matplotlib/backends/backend_pdf.py in finalize(self)
    792         self.endStream()
    793         self._write_annotations()
--> 794         self.writeFonts()
    795         self.writeExtGSTates()
    796         self._write_soft_mask_groups()

~/anaconda3/lib/python3.8/site-packages/matplotlib/backends/backend_pdf.py in writeFonts(self)
    925                 chars = self._character_tracker.used.get(filename)
    926                 if chars:
--> 927                     fonts[Fx] = self.embedTTF(filename, chars)
    928         self.writeObject(self.fontObject, fonts)
    929 

~/anaconda3/lib/python3.8/site-packages/matplotlib/backends/backend_pdf.py in embedTTF(self, filename, characters)
   1422 
   1423         if fonttype == 3:
-> 1424             return embedTTFType3(font, characters, descriptor)
   1425         elif fonttype == 42:
   1426             return embedTTFType42(font, characters, descriptor)

~/anaconda3/lib/python3.8/site-packages/matplotlib/backends/backend_pdf.py in embedTTFType3(font, characters, descriptor)
   1150                 # the missing glyphs may not even be used in the actual string.
   1151                 warnings.filterwarnings("ignore")
-> 1152                 widths = [get_char_width(charcode)
   1153                           for charcode in range(firstchar, lastchar+1)]
   1154             descriptor['MaxWidth'] = max(widths)

~/anaconda3/lib/python3.8/site-packages/matplotlib/backends/backend_pdf.py in <listcomp>(.0)
   1150                 # the missing glyphs may not even be used in the actual string.
   1151                 warnings.filterwarnings("ignore")
-> 1152                 widths = [get_char_width(charcode)
   1153                           for charcode in range(firstchar, lastchar+1)]
   1154             descriptor['MaxWidth'] = max(widths)

~/anaconda3/lib/python3.8/site-packages/matplotlib/backends/backend_pdf.py in get_char_width(charcode)
   1141             def get_char_width(charcode):
   1142                 s = ord(cp1252.decoding_table[charcode])
-> 1143                 width = font.load_char(
   1144                     s, flags=LOAD_NO_SCALE | LOAD_NO_HINTING).horiAdvance
   1145                 return cvt(width)

~/anaconda3/lib/python3.8/site-packages/matplotlib/_text_helpers.py in warn_on_missing_glyph(codepoint)
     17         "Glyph {} ({}) missing from current font.".format(
     18             codepoint,
---> 19             chr(codepoint).encode("ascii", "namereplace").decode("ascii")))
     20     block = ("Hebrew" if 0x0590 <= codepoint <= 0x05ff else
     21              "Arabic" if 0x0600 <= codepoint <= 0x06ff else

AttributeError: module 'unicodedata2' has no attribute 'ucnhash_CAPI'