Problem connecting to Timekpr-nExT daemon

Hi,
I'm running Ubuntu 22.04 on HP ProBook. I've installed Timekpr and it seems it works but when restricted users log in, they received a notification: "There is a problem connecting to Timekpr-nExT daemon (internal connection error, please check log files)!"
In /tmp/timekprc.*.log, the message is:
2023-04-13 17:46:46.165918: --=== ERROR sending message through timekpr dbus ===---
2023-04-13 17:46:46.166002: org.freedesktop.DBus.Python.TypeError: Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/dbus/service.py", line 715, in _message_cb
    retval = candidate_method(self, *args, **keywords)
  File "/usr/lib/python3/dist-packages/timekpr/server/interface/dbus/daemon.py", line 522, in requestTimeLeft
    self._timekprUserList[pUserName].getTimeLeft(True)
  File "/usr/lib/python3/dist-packages/timekpr/server/user/userdata.py", line 603, in getTimeLeft
    self._timekprUserNotification.processTimeLeft(pForceNotifications, timeValues)
  File "/usr/lib/python3/dist-packages/timekpr/common/utils/notifications.py", line 139, in processTimeLeft
    self.timeLeftNotification(notifUrgency, max(pTimeValues[cons.TK_CTRL_LEFT], 0), max(pTimeValues[cons.TK_CTRL_LEFTD], 0), pTimeValues[cons.TK_CTRL_LIMITD])
  File "/usr/lib/python3/dist-packages/dbus/decorators.py", line 325, in emit_signal
    message.append(signature=signature, *args)
TypeError: 'float' object cannot be interpreted as an integer

2023-04-13 17:46:46.166029: --=== ERROR sending message through timekpr dbus ===---

What can I do to prevent such message?

Thanks in advance

Guy Robert