Error in Connecting Multiple Database Django ( 'DatabaseOperations' object has no attribute 'geo_db_type' )

I am using multiple databases in Django,

On the current server, PostGIS is installed and am trying to connect POSTGRESQL from another server,

**settings.py**

```python

DATABASES = {

    'default': {

        'ENGINE': 'django.contrib.gis.db.backends.postgis',

        'NAME': 'db_name_1',

        'USER': 'user_name_1',

        'PASSWORD': '',

        'HOST': '',

        'PORT': '',

    },

    'users_db' : {

        'NAME' : 'db_name_2',

        'ENGINE' : 'django.db.backends.postgresql_psycopg2',

        'HOST' : '',

        'PORT' : '',

        'USER' : 'user_name_2',

        'PASSWORD' : '',

    },

    # 'users_db' : dj_database_url.config(default='postgres://user_name_2:password_2@host_2:0000/db_name_2')

}

```

Now as per documentation.

**Error**

```bash

python3 manage.py migrate --database='users_db'

```

```python

AttributeError: 'DatabaseOperations' object has no attribute 'geo_db_type'

```

**UPDATE**

As per other StackOverflow pages, I found ```dj-database-url``` i used it but still problem persists.

for ```dj-database-url```

```

'users_db' : dj_database_url.config(default='postgres://user_name_2:password_2@host_2:0000/db_name_2')

```

Any help will be appreciated,

Thanks & Regards

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