# FATAL Error: \[config validation of \[elasticsearch\].username\]
**URL:** https://discuss.elastic.co/t/fatal-error-config-validation-of-elasticsearch-username/324714
**Category:** Kibana
**Tags:** docker
**Created:** [February 4, 2023, 3:06pm UTC](https://discuss.elastic.co/t/fatal-error-config-validation-of-elasticsearch-username/324714 "2023-02-04T15:06:44Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@mohanss08](https://discuss.elastic.co/u/mohanss08)
#### Post date: [February 4, 2023, 3:06pm UTC](https://discuss.elastic.co/t/fatal-error-config-validation-of-elasticsearch-username/324714/1 "2023-02-04T15:06:44Z")
Hello Team,
I had `Elasticsearch, Logstash and Kibana v7.16.2` with `xpack security based login enabled`, So today i had upgraded my ELK versions to `8.6.1` using my docker-compose file, but when i start the kibana container it always fails with below errors.
```auto
kibana | FATAL Error: [config validation of [elasticsearch].username]: value of "elastic" is forbidden. This is a superuser account that cannot write to system indices that Kibana needs to function. Use a service account token instead. Learn more: https://www.elastic.co/guide/en/elasticsearch/reference/8.0/service-accounts.html
```
My docker-compose file's Kibana section as follows.
```auto
kibana:
image: docker.elastic.co/kibana/kibana:8.6.1
container_name: kibana
environment:
ELASTICSEARCH_URL: "http://elasticsearch:9200"
ELASTICSEARCH_USERNAME: "elastic"
ELASTICSEARCH_PASSWORD: "password1234"
ports:
- 5601:5601
depends_on:
- elasticsearch
```
Through online sources i had created service token by connecting my elasticsearch container. using cli
```auto
$ elasticsearch-service-tokens create elastic/kibana kibana_token
SERVICE_TOKEN elastic/kibana/kibana_token = AAEAAWVsYXNwedvZmxlZXQtc2VydmVyL3Rva2VuMTo3TFdaQED
```
In my compose file have replaced the password with token and tried. But it fails with same error.
Please guide me to solve this issue. Thanks.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [March 4, 2023, 3:07pm UTC](https://discuss.elastic.co/t/fatal-error-config-validation-of-elasticsearch-username/324714/2 "2023-03-04T15:07:09Z")
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