Windows: Unable to load shiboken2 after freezing on share directory

import os
import sys
if getattr(sys, 'frozen', False):
    dll_path = os.path.join(os.path.dirname(sys.executable), 'lib')
    print(dll_path)
    os.add_dll_directory(dll_path)

from PySide2 import QtGui, QtCore, QtUiTools, QtWidgets, QtXml

print("Import OK")

import os
import sys

import PySide2
from cx_Freeze import setup, Executable

plugins_path = os.path.join(PySide2.__path__[0], "plugins")


base = None
if sys.platform == 'win32':
    base = 'Win32GUI'

options = {
    'build_exe': {
        "include_files": [os.path.join(plugins_path, "platforms")],  # additional plugins needed by qt at runtime
        "zip_include_packages": ["PySide2", "shiboken2", "encodings"],  # reduce size of packages that are used
        "excludes": ["tkinter", "unittest", "email", "http", "xml", "pydoc", "pdb"],  # exclude packages that are not really needed
    }
}

executables = [
    Executable('test-gui.py', base='Console')
]

setup(
    name='simple_PySide2',
    version='0.1',
    description='Sample cx_Freeze PySide2 script',
    options=options,
    executables=executables
)

python setup.py build --build-exe bin\windows

Traceback (most recent call last):
  File "C:\Users\xxxxxx\AppData\Local\Programs\Python\Python39\lib\genericpath.py", line 19, in exists
    os.stat(path)
FileNotFoundError: [WinError 2] Le fichier spécifié est introuvable: '\\\\filer001\\HOME25\\files.dir\\shibokensupport\\signature\\loader.py'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "(builtin)", line 113, in bootstrap
  File "C:\Users\xxxxxx\AppData\Local\Programs\Python\Python39\lib\genericpath.py", line 19, in exists
    os.stat(path)
KeyboardInterrupt
Fatal Python error: could not initialize part 2
Python runtime state: initialized

Current thread 0x00003f08 (most recent call first):
  File "C:\temp\PYTHON39_QT5\python_env\lib\site-packages\shiboken2\__init__.py", line 30 in <module>
  File "<frozen zipimport>", line 259 in load_module
  File "<frozen importlib._bootstrap>", line 627 in _load_backward_compatible
  File "<frozen importlib._bootstrap>", line 664 in _load_unlocked
  File "<frozen importlib._bootstrap>", line 986 in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 1007 in _find_and_load
  File "C:\temp\PYTHON39_QT5\python_env\lib\site-packages\PySide2\__init__.py", line 58 in _setupQtDirectories
  File "C:\temp\PYTHON39_QT5\python_env\lib\site-packages\PySide2\__init__.py", line 107 in <module>
  File "<frozen zipimport>", line 259 in load_module
  File "<frozen importlib._bootstrap>", line 627 in _load_backward_compatible
  File "<frozen importlib._bootstrap>", line 664 in _load_unlocked
  File "<frozen importlib._bootstrap>", line 986 in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 1007 in _find_and_load
  File "test-gui.py", line 8 in <module>
  File "C:\temp\PYTHON39_QT5\python_env\lib\site-packages\cx_Freeze\initscripts\Console.py", line 15 in run
  File "C:\temp\PYTHON39_QT5\python_env\lib\site-packages\cx_Freeze\initscripts\__startup__.py", line 104 in run

L:\dev\PYTHON39_QT5>
L:\dev\PYTHON39_QT5>python PySide2app.py
Traceback (most recent call last):
  File "L:\dev\PYTHON39_QT5\PySide2app.py", line 5, in <module>
    from PySide2.QtWidgets import QApplication, QWidget
ModuleNotFoundError: No module named 'PySide2'