Le portail francophone de la géomatique

Bonjour à tous
Je suis sur DEBIAN Buster 10 et ma version de Qgis est la 3.18
Quand je tente d'installer le plugin Qban(0) j'ai le message d'erreur suivant: Quelqu’un peut-il m'aider ?

ModuleNotFoundError: No module named 'simplejson'
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/qgis/utils.py", line 335, in _startPlugin
    plugins[packageName] = package.classFactory(iface)
  File "/home/tchars/.local/share/QGIS/QGIS3/profiles/default/python/plugins/QBano/__init__.py", line 34, in classFactory
    from .QBano import QBano
  File "/usr/lib/python3/dist-packages/qgis/utils.py", line 799, in _import
    mod = _builtin_import(name, globals, locals, fromlist, level)
  File "/home/tchars/.local/share/QGIS/QGIS3/profiles/default/python/plugins/QBano/QBano.py", line 30, in
    from .QBano_dialog import QBanoDialog
  File "/usr/lib/python3/dist-packages/qgis/utils.py", line 799, in _import
    mod = _builtin_import(name, globals, locals, fromlist, level)
  File "/home/tchars/.local/share/QGIS/QGIS3/profiles/default/python/plugins/QBano/QBano_dialog.py", line 38, in
    import simplejson as json
  File "/usr/lib/python3/dist-packages/qgis/utils.py", line 799, in _import
    mod = _builtin_import(name, globals, locals, fromlist, level)
ModuleNotFoundError: No module named 'simplejson'

Version de Python : 3.7.3 (default, Jan 22 2021, 20:04:44) [GCC 8.3.0]
Version de QGIS : 3.18.3-Zürich Zürich, 735cc85be9

Chemin Python :
/usr/share/qgis/python
/home/tchars/.local/share/QGIS/QGIS3/profiles/default/python
/home/tchars/.local/share/QGIS/QGIS3/profiles/default/python/plugins
/usr/share/qgis/python/plugins
/usr/lib/python37.zip
/usr/lib/python3.7
/usr/lib/python3.7/lib-dynload
/usr/local/lib/python3.7/dist-packages
/usr/lib/python3/dist-packages
/home/tchars/.local/share/QGIS/QGIS3/profiles/default/python