Django logging does not write debug.log file issue

I just set up new server and while I'm checking it, I got 500 error. I expect that debug.log file has error message, However, when I check the file the file was empty. Nothing was written. So I changed the loggers settings may times, but still the file is empty and I can't fix the error because what is wrong with it...

This is my views.py

logger = logging.getLogger(__name__)

put this line to do logging.

settings.py

LOGGING = {
'version': 1,
'disable_existing_loggers': False,
'filters': {
    'require_debug_false': {
        '()': 'django.utils.log.RequireDebugFalse'
    }
},
'formatters': {
    'simple': {
        'format': '%(asctime)s %(filename)s:%(lineno)d %(message)s',
    }
},
'handlers': {
    'file': {
        'level': 'DEBUG',
        'filters': ['require_debug_false'],
        'class': 'logging.handlers.RotatingFileHandler',
        'filename': '/var/log/service/debug.log',
        'formatter': 'simple',
    },
},
'loggers': {
    'django': {
        'handlers': ['file'],
        'level': 'ERROR',
        'propagate': True,
    },
}
}

if DEBUG:
    del LOGGING['loggers']['django']
    del LOGGING['handlers']['file']

if not os.path.exists('log'):
    os.makedirs('log')

I attached my wsgi.py

import os

from django.core.wsgi import get_wsgi_application

os.environ.setdefault("DJANGO_SETTINGS_MODULE", "project.settings")

application = get_wsgi_application()

This is settings.py where import local settings.

try:
    from local_settings import *
except ImportError:
    raise ImportError('You must create local_settings.py on project root')

This is local_settings.py

DEBUG=False