Memcached – AttributeError: 'NoneType' object has no attribute 'find', cache error

In my local environment the django development server works fine with no errors.

When I run the app on a production environment with nginx & gunicorn I get this error:

AttributeError: 'NoneType' object has no attribute 'find'

This is the source of the error:

if cache.get('ratings').find(name_input) == -1:
    result = food.objects.get(name = name_input)

I have memcache imported:

from django.core.cache import cache

and in my settings.py:

CACHES = {
   'default': {
       'BACKEND':   
       'django.core.cache.backends.memcached.MemcachedCache',                                                                                                                                                                                                                                                   
        'LOCATION': '127.0.0.1:11211',
    }
}

I expect the webpage to work without errors

——–EDIT:————–

Providing more info I have a JSON script in my HTML section that sends the variable to python.
Then python catches it.

I repeat that everything works like charm locally.

===================================

——–Edit new——
I have tried to change the location of memcache to point to my server in “settings.py”:

CACHES = {
    'default': {
        'BACKEND': 'django.core.cache.backends.memcached.MemcachedCache',
        'LOCATION': 'MY_IP:11211',
}

}

but this attempt didn’t work
I can print normally to the syslog, the values ARE NOT NULL