Zabbix 4.4 API always returns empty results

[console]

Hello,

Zabbix API always returns empty results. This user auth has super admin permissions.

curl -i -k -X POST -H 'Content-Type: application/json-rpc' -d '
{
    "jsonrpc": "2.0",
    "method": "host.get",
    "params": {
        "filter": {
            "host": [
                "Zabbix server",
                "Linux server"
            ]
        }
    },
    "auth": "*****e86c13c8a515c0c6fa9f",
    "id": 1
} ' http://zabbix.com/api_jsonrpc.php

HTTP/1.1 200 OK
Date: Tue, 24 Dec 2019 08:57:11 GMT
Server: Apache
Access-Control-Allow-Origin: *
Access-Control-Allow-Headers: Content-Type
Access-Control-Allow-Methods: POST
Access-Control-Max-Age: 1000
Content-Length: 36
Content-Type: application/json