Metcom MCS301 ProfileGeneric readRowsByRange not working

Hi I'm new here and want to ask you, why reading ProfileGeneric with method readRowsByRange is not working for Metcom MCS301?
Method readRowsByEntry is working ok.
I think it is in datetime formatting, because data comming from meter are like this:

11/24/24 02:00:00 | 743 | 62682
11/25/24 02:00:00 | 750 | 62976
11/25/24 02:00:00 | 750 | 62976
11/26/24 02:00:00 | 756 | 63983
11/26/24 02:00:00 | 756 | 63983

But when I try to format it like this, tyhis error appears:

python : Traceback (most recent call last):
At line:1 char:1
+ python main3.py ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (Traceback (most recent call last)::String) [], RemoteException
+ FullyQualifiedErrorId : NativeCommandError

File "main3.py", line 95, in main
cells = reader.readRowsByRange(profile, dt_from, dt_to)
File "C:\Users\Administrator\Documents\Gurux.DLMS.Python\Gurux.DLMS.Client.Example.python\GXDLMSReader.py", line 358, in readRowsByRange
data = self.client.readRowsByRange(pg, start, end)
File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\gurux_dlms\GXDLMSClient.py", line 1381, in readRowsByRange
_GXCommon.setData(self.settings, buff, DataType.OCTET_STRING, start)
File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\gurux_dlms\internal\_GXCommon.py", line 1378, in setData
cls.setDateTime(settings, buff, value)
File "C:\Users\Administrator\AppData\Local\Programs\Python\Python37\lib\site-packages\gurux_dlms\internal\_GXCommon.py", line 1560, in setDateTime
d = int(dt.value.utcoffset().seconds / 60)
AttributeError: 'NoneType' object has no attribute 'seconds'

Thx a lot.