output

Traceback (most recent call last):
  File "C:/Gurux.DLMS.Python/Gurux.DLMS.Client.Example.python/main.py", line 105, in main
    reader.readAll(settings.outputFile)
  File "C:\Gurux.DLMS.Python\Gurux.DLMS.Client.Example.python\GXDLMSReader.py", line 511, in readAll
    self.read(it, 3)
  File "C:\Gurux.DLMS.Python\Gurux.DLMS.Client.Example.python\GXDLMSReader.py", line 320, in read
    data = self.client.read(item, attributeIndex)[0]
  File "C:\Python\Python38-32\lib\site-packages\gurux_dlms\GXDLMSClient.py", line 974, in read
    return self._read(item.name, item.objectType, attributeOrdinal)
  File "C:\Python\Python38-32\lib\site-packages\gurux_dlms\GXDLMSClient.py", line 963, in _read
    sn += (attributeOrdinal - 1) * 8
TypeError: can only concatenate str (not "int") to str