It does not load the Processing plugin in QGIS 3.16.12 LTR Hannover

[toto71]

After the latest update available for the new OSGeo4W v2 Network Installer repository, I notice that when I start QGIS 3.16.12 I get this message and it doesn't load the Processing plugin:

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Couldn't load plugin 'processing'

ModuleNotFoundError: No module named 'processing.algs.saga.SagaNameDecorator' Traceback (most recent call last):

File "C:\OSGeo4W/apps/qgis-ltr/./python\qgis\utils.py", line 312, in loadPlugin

import(packageName)

File "C:\OSGeo4W/apps/qgis-ltr/./python\qgis\utils.py", line 793, in _import

mod = _builtin_import(name, globals, locals, fromlist, level)

File "C:\OSGeo4W/apps/qgis-ltr/./python/plugins\processing\init.py", line 26, in

from processing.tools.general import * # NOQA

File "C:\OSGeo4W/apps/qgis-ltr/./python\qgis\utils.py", line 793, in _import

mod = _builtin_import(name, globals, locals, fromlist, level)

File "C:\OSGeo4W/apps/qgis-ltr/./python/plugins\processing\tools\general.py", line 32, in

from processing.core.Processing import Processing

File "C:\OSGeo4W/apps/qgis-ltr/./python\qgis\utils.py", line 793, in _import

mod = _builtin_import(name, globals, locals, fromlist, level)

File "C:\OSGeo4W/apps/qgis-ltr/./python/plugins\processing\core\Processing.py", line 69, in

from processing.algs.saga.SagaAlgorithmProvider import SagaAlgorithmProvider # NOQA

File "C:\OSGeo4W/apps/qgis-ltr/./python\qgis\utils.py", line 793, in _import

mod = _builtin_import(name, globals, locals, fromlist, level)

File "C:\OSGeo4W/apps/qgis-ltr/./python/plugins\processing\algs\saga\SagaAlgorithmProvider.py", line 36, in

from .SagaAlgorithm import SagaAlgorithm

File "C:\OSGeo4W/apps/qgis-ltr/./python\qgis\utils.py", line 793, in _import

mod = _builtin_import(name, globals, locals, fromlist, level)

File "C:\OSGeo4W/apps/qgis-ltr/./python/plugins\processing\algs\saga\SagaAlgorithm.py", line 50, in

from processing.algs.saga.SagaNameDecorator import decoratedAlgorithmName, decoratedGroupName

File "C:\OSGeo4W/apps/qgis-ltr/./python\qgis\utils.py", line 793, in _import

mod = _builtin_import(name, globals, locals, fromlist, level)

ModuleNotFoundError: No module named 'processing.algs.saga.SagaNameDecorator'

Python version: 3.9.5 (tags/v3.9.5:0a7dcbd, May 3 2021, 17:27:52) [MSC v.1928 64 bit (AMD64)] QGIS version: 3.16.12-Hannover Hannover, be6cb030

Python Path: C:/OSGeo4W/apps/qgis-ltr/./python C:/Users/pigre/AppData/Roaming/QGIS/QGIS3\profiles\test-ENG/python C:/Users/pigre/AppData/Roaming/QGIS/QGIS3\profiles\test-ENG/python/plugins C:/OSGeo4W/apps/qgis-ltr/./python/plugins C:\OSGeo4W\bin\python39.zip C:\OSGeo4W\apps\Python39\DLLs C:\OSGeo4W\apps\Python39\lib C:\OSGeo4W\bin C:\OSGeo4W\apps\Python39 C:\OSGeo4W\apps\Python39\lib\site-packages C:\OSGeo4W\apps\Python39\lib\site-packages\win32 C:\OSGeo4W\apps\Python39\lib\site-packages\win32\lib C:\OSGeo4W\apps\Python39\lib\site-packages\Pythonwin C:/Users/pigre/AppData/Roaming/QGIS/QGIS3\profiles\test-ENG/python

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OSGeo4W v2 64 bit Win 10 64 bit

[toto71]

The problem is gone after reinstalling SAGA from OSGeo4W v2

thanks, close