How Can I Resolve the 'default' Cache Error When Configuring select2 in Django?

I'm using select2 in my Django application, but when I run the makemigrations or migrate command I get an error:

BASHCopied
ERRORS:
?: (caches.E001) You must define a 'default' cache in your CACHES setting.

My current cache configuration is as follows:

PYTHONCopied
CACHES = {
    # … default cache config and others
    "select2": {
        "BACKEND": "django_redis.cache.RedisCache",
        "LOCATION": "redis://127.0.0.1:6379/2",
        "OPTIONS": {
            "CLIENT_CLASS": "django_redis.client.DefaultClient",
        }
    }
}

# Tell select2 which cache configuration to use:
SELECT2_CACHE_BACKEND = "select2"

How can I resolve this error and correctly configure caching for select2?