Ubuntu 20.04 the new viewer errors out..

[Zibri]

# muselsl view -v 2
Looking for an EEG stream...
Start acquiring data.
Setting up band-pass filter from 3 - 40 Hz

FIR filter parameters
---------------------
Designing a one-pass, zero-phase, non-causal bandpass filter:
- Windowed time-domain design (firwin) method
- Hamming window with 0.0194 passband ripple and 53 dB stopband attenuation
- Lower passband edge: 3.00
- Lower transition bandwidth: 2.00 Hz (-6 dB cutoff frequency: 2.00 Hz)
- Upper passband edge: 40.00 Hz
- Upper transition bandwidth: 10.00 Hz (-6 dB cutoff frequency: 45.00 Hz)
- Filter length: 423 samples (1.652 sec)

WARNING: Traceback (most recent call last):
  File "/usr/local/bin/muselsl", line 8, in <module>
    sys.exit(main())
  File "/usr/local/lib/python3.8/dist-packages/muselsl/__main__.py", line 57, in main
    cli = CLI(args.command)
  File "/usr/local/lib/python3.8/dist-packages/muselsl/cli.py", line 9, in __init__
    getattr(self, command)()
  File "/usr/local/lib/python3.8/dist-packages/muselsl/cli.py", line 244, in view
    view(args.window, args.scale, args.refresh, args.figure, args.version,
  File "/usr/local/lib/python3.8/dist-packages/muselsl/view.py", line 5, in view
    viewer_v2.view()
  File "/usr/local/lib/python3.8/dist-packages/muselsl/viewer_v2.py", line 89, in view
    app.run()
  File "/usr/lib/python3/dist-packages/vispy/app/_default_app.py", line 62, in run
    return default_app.run()
  File "/usr/lib/python3/dist-packages/vispy/app/application.py", line 152, in run
    return self._backend._vispy_run()
  File "/usr/lib/python3/dist-packages/vispy/app/backends/_egl.py", line 112, in _vispy_run
    self._vispy_process_events()
  File "/usr/lib/python3/dist-packages/vispy/app/backends/_egl.py", line 107, in _vispy_process_events
    win._on_draw()
  File "/usr/lib/python3/dist-packages/vispy/app/backends/_egl.py", line 246, in _on_draw
    self._vispy_canvas.events.draw(region=None)  # (0, 0, w, h))
  File "/usr/lib/python3/dist-packages/vispy/util/event.py", line 455, in __call__
    self._invoke_callback(cb, event)
  File "/usr/lib/python3/dist-packages/vispy/util/event.py", line 473, in _invoke_callback
    _handle_exception(self.ignore_callback_errors,
  << caught exception here: >>
  File "/usr/lib/python3/dist-packages/vispy/util/event.py", line 471, in _invoke_callback
    cb(event)
  File "/usr/local/lib/python3.8/dist-packages/muselsl/viewer_v2.py", line 260, in on_draw
    [t.draw() for t in self.names + self.quality]
  File "/usr/local/lib/python3.8/dist-packages/muselsl/viewer_v2.py", line 260, in <listcomp>
    [t.draw() for t in self.names + self.quality]
  File "/usr/lib/python3/dist-packages/vispy/visuals/visual.py", line 435, in draw
    if self._prepare_draw(view=self) is False:
  File "/usr/lib/python3/dist-packages/vispy/visuals/text/text.py", line 588, in _prepare_draw
    n_pix = (self._font_size / 72.) * transforms.dpi  # logical pix
TypeError: unsupported operand type(s) for *: 'float' and 'NoneType'
ERROR: Invoking <bound method Canvas.on_draw of <Canvas (egl) at 0x7f55cbb60e50>> for DrawEvent
ERROR: Invoking <bound method Canvas.on_draw of <Canvas (egl) at 0x7f55cbb60e50>> repeat 2
ERROR: Invoking <bound method Canvas.on_draw of <Canvas (egl) at 0x7f55cbb60e50>> repeat 4
ERROR: Invoking <bound method Canvas.on_draw of <Canvas (egl) at 0x7f55cbb60e50>> repeat 8
ERROR: Invoking <bound method Canvas.on_draw of <Canvas (egl) at 0x7f55cbb60e50>> repeat 16
ERROR: Invoking <bound method Canvas.on_draw of <Canvas (egl) at 0x7f55cbb60e50>> repeat 32
ERROR: Invoking <bound method Canvas.on_draw of <Canvas (egl) at 0x7f55cbb60e50>> repeat 64
ERROR: Invoking <bound method Canvas.on_draw of <Canvas (egl) at 0x7f55cbb60e50>> repeat 128
ERROR: Invoking <bound method Canvas.on_draw of <Canvas (egl) at 0x7f55cbb60e50>> repeat 256
ERROR: Invoking <bound method Canvas.on_draw of <Canvas (egl) at 0x7f55cbb60e50>> repeat 512
ERROR: Invoking <bound method Canvas.on_draw of <Canvas (egl) at 0x7f55cbb60e50>> repeat 1024

Everything else works..
I tried uninstalling vispy and reinstalling with apt install python3-vispy... but nothing..
then I uninstalled python3-vispy and reinstalled vispy using
pip install vispy

I always get the same error.

Viewer 1 works.