Cannot run SUPPNET

[TrentinErasmo]

Hi,

I recently tried to follow the read.me file to install SUPPNET. I created the environment and the symbolic link but when I try to run SUPPNET (either by typing 'SUPPNET' or going to the directory and run 'python3 suppnet.py') this error message appears:

Calling python "/home/trentin/suppnet/suppnet.py"
Traceback (most recent call last):
  File "/home/trentin/suppnet/suppnet.py", line 17, in <module>
    from matplotlib.backends.backend_qt5agg import (
  File "/home/trentin/.local/lib/python3.8/site-packages/matplotlib/backends/backend_qt5agg.py", line 5, in <module>
    from .backend_qtagg import (
  File "/home/trentin/.local/lib/python3.8/site-packages/matplotlib/backends/backend_qtagg.py", line 12, in <module>
    from .backend_qt import (
  File "/home/trentin/.local/lib/python3.8/site-packages/matplotlib/backends/backend_qt.py", line 73, in <module>
    _MODIFIER_KEYS = [
  File "/home/trentin/.local/lib/python3.8/site-packages/matplotlib/backends/backend_qt.py", line 74, in <listcomp>
    (_to_int(getattr(_enum("QtCore.Qt.KeyboardModifier"), mod)),
TypeError: int() argument must be a string, a bytes-like object or a number, not 'KeyboardModifier'

The line in question is:

from matplotlib.backends.backend_qt5agg import (
    FigureCanvasQTAgg as FigureCanvas,
    NavigationToolbar2QT as NavigationToolbar)

But if I try to import this package on python by itself, it works fine.

Thank you in advance.