Uncaught ModuleNotFoundError: No module named 'PIL'

[RobyHope]

Impossibile caricare il plugin 'html_table_exporter' a causa di un errore chiamando il metodo classFactory()
Steps to reproduce

1. First
2. Second
3. Third

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/osgeolive/.local/share/QGIS/QGIS3/profiles/default/python/plugins/html_table_exporter/__init__.py", line 35, in classFactory
    from .html_table_exporter import HTMLTableExporter
  File "/usr/lib/python3/dist-packages/qgis/utils.py", line 685, in _import
    mod = _builtin_import(name, globals, locals, fromlist, level)
  File "/home/osgeolive/.local/share/QGIS/QGIS3/profiles/default/python/plugins/html_table_exporter/html_table_exporter.py", line 29, in <module>
    from PIL import Image
  File "/usr/lib/python3/dist-packages/qgis/utils.py", line 685, in _import
    mod = _builtin_import(name, globals, locals, fromlist, level)
ModuleNotFoundError: No module named 'PIL'

html_table_exporter 0.2.0, QGIS 3.4.10-Madeira on Linux 5.0.0-23-generic