method save not save anything to database

I want to ask, I created a function to get jwt tokens and request a new token if the old token has expired, which will then be stored in the database. this function/app works when i run it on my local server, but when i try to host my app on my domain it saves nothing. I've set the .env file according to the database I have at the hosting provider, is there something I'm missing? i'm using ci 4.2.1 btw

Code:

function akses_restapi($method, $url, $data)
{
    $client = \Config\Services::curlrequest();
    $model = new ModelToken();
    $idToken = "1";
    $token = $model->getToken($idToken);
    $tokenPart = explode(".", $token);
    $payload = $tokenPart[1];
    $decode = base64_decode($payload);
    $json = json_decode($decode, true);
    $exp = $json['exp'];
    $waktuSekarang = time();


    if ($exp <= $waktuSekarang) {
        $url = "myendpoint";
        $form_params = [
            'email' => 'myadminemail',
            'password' => 'mypassword'
        ];
        $response = $client->request('post', $url, ['http_errors' => false, 'form_params' => $form_params]);
        $result = json_decode($response->getBody(), true);
        $token = $result['access_token'];
        $dataToken = [
            'id' => $idToken,
            'token' => $token
        ];
        $model->save($dataToken);
    }

    $headers = [
        'Authorization' => 'Bearer ' . $token
    ];
    $response = $client->request($method, $url, ['headers' => $headers, 'http_errors' => false, 'form_params' => $data]);

    return $response->getBody();
}