UMEP does not load No module named 'packaging'

[dimadrones]

QGIS 3.16
Windows 7

Any help would be very much appreciated!

After installing UMEP when I try to load it I get this message

Impossibile caricare il plugin 'UMEP' a causa di un errore chiamando il metodo classFactory() 

ModuleNotFoundError: No module named 'packaging' 
Traceback (most recent call last):
  File "C:/PROGRA~1/QGIS3~1.16/apps/qgis-ltr/./python\qgis\utils.py", line 334, in _startPlugin
    plugins[packageName] = package.classFactory(iface)
  File "C:/Users/xxx/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\UMEP\__init__.py", line 34, in classFactory
    from .UMEP import UMEP
  File "C:/PROGRA~1/QGIS3~1.16/apps/qgis-ltr/./python\qgis\utils.py", line 793, in _import
    mod = _builtin_import(name, globals, locals, fromlist, level)
  File "C:/Users/xxx/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\UMEP\UMEP.py", line 53, in 
    from .SuewsSimple.suews_simple import SuewsSimple
  File "C:/PROGRA~1/QGIS3~1.16/apps/qgis-ltr/./python\qgis\utils.py", line 793, in _import
    mod = _builtin_import(name, globals, locals, fromlist, level)
  File "C:/Users/xxx/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\UMEP\SuewsSimple\suews_simple.py", line 35, in 
    from ..suewsmodel import suews_wrapper
  File "C:/PROGRA~1/QGIS3~1.16/apps/qgis-ltr/./python\qgis\utils.py", line 793, in _import
    mod = _builtin_import(name, globals, locals, fromlist, level)
  File "C:/Users/xxx/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\UMEP\suewsmodel\__init__.py", line 5, in 
    from .supy_installer import setup_supy
  File "C:/PROGRA~1/QGIS3~1.16/apps/qgis-ltr/./python\qgis\utils.py", line 793, in _import
    mod = _builtin_import(name, globals, locals, fromlist, level)
  File "C:/Users/xxx/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\UMEP\suewsmodel\supy_installer.py", line 4, in 
    from packaging import version
  File "C:/PROGRA~1/QGIS3~1.16/apps/qgis-ltr/./python\qgis\utils.py", line 793, in _import
    mod = _builtin_import(name, globals, locals, fromlist, level)
ModuleNotFoundError: No module named 'packaging'


Versione Python: 3.7.0 (v3.7.0:1bf9cc5093, Jun 27 2018, 04:59:51) [MSC v.1914 64 bit (AMD64)] 
Versione di QGIS: 3.16.15-Hannover Hannover, e7fdad6431 

Percorso Python:
C:/PROGRA~1/QGIS3~1.16/apps/qgis-ltr/./python
C:/Users/xxx/AppData/Roaming/QGIS/QGIS3\profiles\default/python
C:/Users/xxx/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins
C:/PROGRA~1/QGIS3~1.16/apps/qgis-ltr/./python/plugins
C:\PROGRA~1\QGIS3~1.16\apps\Python37
C:\PROGRA~1\QGIS3~1.16\apps\Python37\Scripts
C:\Program Files\QGIS 3.16\bin\python37.zip
C:\PROGRA~1\QGIS3~1.16\apps\Python37\DLLs
C:\PROGRA~1\QGIS3~1.16\apps\Python37\lib
C:\Program Files\QGIS 3.16\bin
C:\PROGRA~1\QGIS3~1.16\apps\Python37\lib\site-packages
C:\PROGRA~1\QGIS3~1.16\apps\Python37\lib\site-packages\win32
C:\PROGRA~1\QGIS3~1.16\apps\Python37\lib\site-packages\win32\lib
C:\PROGRA~1\QGIS3~1.16\apps\Python37\lib\site-packages\Pythonwin
C:/Users/xxx/AppData/Roaming/QGIS/QGIS3\profiles\default/python
C:/Users/xxx/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\excel_sync\libs\xlrd-1.2.0-py2.py3-none-any.whl
C:/Users/xxx/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\excel_sync\libs\xlwt-1.3.0-py2.py3-none-any.whl
C:/Users/xxx/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\FragScape\qgis_lib_mc

Desktop (please complete the following information):

• OS: [e.g. macOS]
• QGIS Version [e.g. 3.18]
• UMEP Version [e.g. 3.16.2]
• SuPy Version [e.g. 2021.1.23]

[biglimp]

This happens since QGIS made updates. See #438 or #319 for possible solutions. I convert this to the Discussions page as this is not a UMEP specific issue.