Kafka admin sass config not recognized

Question

I'm trying to configure spring Kafka admin with sass but I receive this error:

2021-12-14 19:59:56.238  WARN 37398 --- [    Test worker] o.a.k.clients.admin.AdminClientConfig    : The configuration 'sasl.login.callback.handler.class' was supplied but isn't a known config.
2021-12-14 19:59:56.238  WARN 37398 --- [    Test worker] o.a.k.clients.admin.AdminClientConfig    : The configuration 'sasl.jaas.config' was supplied but isn't a known config.

I'm quite sure that the sasl.login.callback.handler.class and sasl.jaas.config are right but I don't know how it gives me this error.

The configuration is:

    @Bean
    public KafkaAdmin kafkaAdmin() throws IOException {
        Map<String, Object> props = new HashMap<>();
        Resource saslConfigFile = resourceLoader.getResource("classpath:sasl-config.conf");
        String config = StreamUtils.copyToString(saslConfigFile.getInputStream(), defaultCharset());
        props.put(AdminClientConfig.BOOTSTRAP_SERVERS_CONFIG, queue_server_address);
        props.put(AdminClientConfig.CLIENT_ID_CONFIG, String.format("%s-admin", queue_client_id));
        if (enableAuthentication) {
            props.put("sasl.login.callback.handler.class", "it.infn.kafka.security.oauthbearer.OauthAuthenticateLoginCallbackHandler");
            props.put(SaslConfigs.SASL_JAAS_CONFIG, config
                    .replace("${kafka_oauth_server}", filterOIDCHTTPrefix(oidcProperties.authServer))
                    .replace("${kafka_oauth_client_id}", oidcProperties.clientId)
                    .replace("${kafka_oauth_secret}", oidcProperties.clientSecret));
            props.put("sasl.mechanism", "OAUTHBEARER");
            props.put("security.protocol", "SASL_PLAINTEXT");
        }
        return new KafkaAdmin(props);
    }

the salsa config file has this content:

org.apache.kafka.common.security.oauthbearer.OAuthBearerLoginModule required
        OAUTH_LOGIN_SERVER="${kafka_oauth_server}"
        OAUTH_LOGIN_ENDPOINT="/realms/test-realm/protocol/openid-connect/token"
        OAUTH_LOGIN_GRANT_TYPE="client_credentials"
        OAUTH_LOGIN_SCOPE="profile"
        OAUTH_CLIENT_ID="${kafka_oauth_client_id}"
        OAUTH_CLIENT_SECRET="${kafka_oauth_secret}"
        OAUTH_INTROSPECT_SERVER="${kafka_oauth_server}"
        OAUTH_INTROSPECT_ENDPOINT="/realms/test-realm/protocol/openid-connect/token/introspect"
        OAUTH_REFRESH_GRANT_TYPE="refresh_token"
        OAUTH_ACCEPT_UNSECURE_SERVER=true
        OAUTH_WITH_SSL=false;