problem with installation

[peterkotek]

I am unable to install the package for QGIS.
I have copied the necessary files to the /apps folder of my QGIS installation (I have tried a number of versions, 3.2, 3.4 and 3.6).

When running setup.bat as an administrator, I get this error message
(it seems that the installer is does not locate the QGIS installation folder but is looking for Python36 in Windows\System32...):

Can you direct me towards a possible solution? Error code below.

============================== Install python packages =====================================

C:\Windows\System32>REM Set python executable real directory

C:\Windows\System32>SET "QGIS_PYTHON_VERSION=Python36"

C:\Windows\System32>SET "PYTHON_DIR=C:\apps\Python36"

C:\Windows\System32>IF NOT EXIST "C:\apps\Python36" (
SET "QGIS_PYTHON_VERSION=Python37"
SET "PYTHON_DIR=C:\apps\Python37"
)

C:\Windows\System32>IF NOT EXIST "C:\apps\Python37" (
set /p user_input="Error: Impossible to find right version for python. Press enter to quit."
EXIT /b
)
Error: Impossible to find right version for python. Press enter to quit.