"Error 1053: The service did not respond timely", could not start service created with cx_Freeze from Python code

I'm trying to create Windows service from my Python code using cx_Freeze. Python code works fine, it's debugged and reliable, but when I create exe file I got problems.

Here is my cx_Freeze setup code:

# Config file for packing python scripts into exe file
# Run with "python.exe create_win_exe.py build"
import sys
from cx_Freeze import setup, Executable

version = '1.00'

# Dependencies are automatically detected, but it might need fine tuning.
build_exe_options = {'packages': ['win32timezone'], 'includes': ['idna.idnadata']}

# Use default base - console application
base = None

setup(name = "service-test",
      version = version,
      description = "Service test",
      options = {"build_exe": build_exe_options},
      executables = [Executable("service-test.py", base=base)])

Python code (I've taken example from here How do you run a Python script as a service in Windows?):

# -*- coding: utf-8 -*-
import win32serviceutil
import win32service
import win32event
import servicemanager
import socket
import datetime
import time

class AppServerSvc (win32serviceutil.ServiceFramework):
    _svc_name_ = "TestService5"
    _svc_display_name_ = "Test Service 5"
    stop_flag = False

    def __init__(self,args):
        win32serviceutil.ServiceFramework.__init__(self,args)
        self.hWaitStop = win32event.CreateEvent(None,0,0,None)
        socket.setdefaulttimeout(60)

    def SvcStop(self):
        self.stop_flag = True
        self.ReportServiceStatus(win32service.SERVICE_STOP_PENDING)
        win32event.SetEvent(self.hWaitStop)

    def SvcDoRun(self):
        servicemanager.LogMsg(servicemanager.EVENTLOG_INFORMATION_TYPE,
                              servicemanager.PYS_SERVICE_STARTED,
                              (self._svc_name_,''))
        self.main()

    def main(self):
        fout = open('C:\\Users\\Константин\\service-test.log', 'w')
        while not self.stop_flag:
            try:
                fout.write(str(datetime.datetime.now()) + '\n')
                fout.flush()
            except BaseException as be:
                print('Error while writing to file: {}'.format(str(be)))
            time.sleep(1)

if __name__ == '__main__':
    win32serviceutil.HandleCommandLine(AppServerSvc)

When I create exe file, I could install it as service:

  > service-test.exe install
  Installing service TestService5
  Service installed

Also I could finely debug it, it works as expected.

But it doesn't start:

> service-test.exe start
Starting service TestService5
Error starting service: The service did not respond timely

Same trouble if I use pyinstaller instead of cx_Freeze.

Could anybody help with it?

from "Error 1053: The service did not respond timely", could not start service created with cx_Freeze from Python code