Psychopy doesn't run

There’s an error when trying to run psychopy.

  File "/h/t/a/lib/python3.7/site-packages/wx/", line 17, in <module>
    from wx.core import *
  File "/h/t/a/lib/python3.7/site-packages/wx/", line 12, in <module>
    from ._core import *
ImportError: /lib/x86_64-linux-gnu/ undefined symbol: hb_buffer_set_invisible_glyph

I’m using Pop_OS 20.04. The first issue was that the Ubuntu 20.04 wxpython wheel was not recognised so I had to get an earlier version. This may be why I’m encountering this error