### Author:  [@Skander\_Mansouri](https://discuss.elastic.co/u/Skander_Mansouri)
#### Post date: [June 7, 2023, 6:49pm UTC](https://discuss.elastic.co/t/elasticsearch-8-client-is-giving-error-the-following-method-did-not-exist-org-elasticsearch-client-requestoptions-builder-org-elasticsearch-client-requestoptions-builder-removeheader-java-lang-string/335467/1 "2023-06-07T18:49:22Z")
I have copied exactly the same steps as the documentation [elastic8 docs](https://www.elastic.co/guide/en/elasticsearch/client/java-api-client/current/installation.html)
```auto
@Bean
public ElasticsearchClient getElasticSearchClient(){
RestClient restClient = RestClient.builder(
new HttpHost("", 9200)).build();
// Create the transport with a Jackson mapper
ElasticsearchTransport transport = new RestClientTransport(
restClient, new JacksonJsonpMapper());
// And create the API client
ElasticsearchClient client = new ElasticsearchClient(transport);
return client;
}
```
and I'm receiving this error
```auto
Error it gives
An attempt was made to call a method that does not exist. The attempt was made from the following location:
co.elastic.clients.transport.rest_client.RestClientOptions.addBuiltinHeaders(RestClientOptions.java:170)
The following method did not exist:
'org.elasticsearch.client.RequestOptions$Builder org.elasticsearch.client.RequestOptions$Builder.removeHeader(java.lang.String)'
The method's class, org.elasticsearch.client.RequestOptions$Builder, is available from the following locations:
```
Saw the library of rest\_client that was causing the issue and it's 7.2.
my pom is the following
```auto
co.elastic.clients
elasticsearch-java
${elasticsearch-java.version}
com.fasterxml.jackson.core
jackson-databind
2.12.3
```
---
### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [June 7, 2023, 7:03pm UTC](https://discuss.elastic.co/t/elasticsearch-8-client-is-giving-error-the-following-method-did-not-exist-org-elasticsearch-client-requestoptions-builder-org-elasticsearch-client-requestoptions-builder-removeheader-java-lang-string/335467/2 "2023-06-07T19:03:12Z")
Welcome! Have a look at the dependency tree.
It will probably show you that you are not using the right version of the low level client.
---
### Author:  [@Skander\_Mansouri](https://discuss.elastic.co/u/Skander_Mansouri)
#### Post date: [June 7, 2023, 7:24pm UTC](https://discuss.elastic.co/t/elasticsearch-8-client-is-giving-error-the-following-method-did-not-exist-org-elasticsearch-client-requestoptions-builder-org-elasticsearch-client-requestoptions-builder-removeheader-java-lang-string/335467/3 "2023-06-07T19:24:20Z")
Looks like it's the apache beam who's downloading the dependency of
```auto
- org.apache.beam:beam-sdks-java-io-elasticsearch:jar:2.39.0:compile
[INFO] | +- org.apache.httpcomponents:httpasyncclient:jar:4.1.5:compile
[INFO] | +- org.apache.httpcomponents:httpcore-nio:jar:4.4.15:compile
[INFO] | \- org.elasticsearch.client:elasticsearch-rest-client:jar:7.15.2:compile
```
---
### Author:  [@Skander\_Mansouri](https://discuss.elastic.co/u/Skander_Mansouri)
#### Post date: [June 7, 2023, 7:41pm UTC](https://discuss.elastic.co/t/elasticsearch-8-client-is-giving-error-the-following-method-did-not-exist-org-elasticsearch-client-requestoptions-builder-org-elasticsearch-client-requestoptions-builder-removeheader-java-lang-string/335467/4 "2023-06-07T19:41:50Z")
I made the exclusion from apache beam
```auto
beam-sdks-java-io-elasticsearch
org.apache.beam
${apache.beam.version}
org.elasticsearch.client
elasticsearch-rest-client
```
my dependency tree looks like
```auto
+- co.elastic.clients:elasticsearch-java:jar:8.8.0:compile
[INFO] | +- org.elasticsearch.client:elasticsearch-rest-client:jar:7.15.2:compile
[INFO] | \- org.eclipse.parsson:parsson:jar:1.0.0:compile
```
and still receives the same error
@dadoonet
---
### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [June 7, 2023, 8:01pm UTC](https://discuss.elastic.co/t/elasticsearch-8-client-is-giving-error-the-following-method-did-not-exist-org-elasticsearch-client-requestoptions-builder-org-elasticsearch-client-requestoptions-builder-removeheader-java-lang-string/335467/5 "2023-06-07T20:01:59Z")
You need to use 7.17.10 or 7.17.11 for both clients.
---
### Author:  [@Skander\_Mansouri](https://discuss.elastic.co/u/Skander_Mansouri)
#### Post date: [June 7, 2023, 8:10pm UTC](https://discuss.elastic.co/t/elasticsearch-8-client-is-giving-error-the-following-method-did-not-exist-org-elasticsearch-client-requestoptions-builder-org-elasticsearch-client-requestoptions-builder-removeheader-java-lang-string/335467/6 "2023-06-07T20:10:17Z")
does that mean the 8.8 doesn't work or what? I'm not sure I get your answer
---
### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [June 8, 2023, 2:46am UTC](https://discuss.elastic.co/t/elasticsearch-8-client-is-giving-error-the-following-method-did-not-exist-org-elasticsearch-client-requestoptions-builder-org-elasticsearch-client-requestoptions-builder-removeheader-java-lang-string/335467/7 "2023-06-08T02:46:19Z")
In your Pom, you set 7.17.0 as the version. So I guessed you are using a 7.17.0 version. Am I wrong?
What is your Elasticsearch server version?
---
### Author:  [@Skander\_Mansouri](https://discuss.elastic.co/u/Skander_Mansouri)
#### Post date: [June 8, 2023, 7:07am UTC](https://discuss.elastic.co/t/elasticsearch-8-client-is-giving-error-the-following-method-did-not-exist-org-elasticsearch-client-requestoptions-builder-org-elasticsearch-client-requestoptions-builder-removeheader-java-lang-string/335467/8 "2023-06-08T07:07:38Z")
my bad. I switched my pom to using the 8.8 version. copied the previous pom
---
### Author:  [@Skander\_Mansouri](https://discuss.elastic.co/u/Skander_Mansouri)
#### Post date: [June 8, 2023, 7:09am UTC](https://discuss.elastic.co/t/elasticsearch-8-client-is-giving-error-the-following-method-did-not-exist-org-elasticsearch-client-requestoptions-builder-org-elasticsearch-client-requestoptions-builder-removeheader-java-lang-string/335467/9 "2023-06-08T07:09:42Z")
the ES version I'm using is 8.
the lib version is 8.8
the rest-client downloaded via the lib is 7.5
the issue is still there
---
### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [June 8, 2023, 7:32am UTC](https://discuss.elastic.co/t/elasticsearch-8-client-is-giving-error-the-following-method-did-not-exist-org-elasticsearch-client-requestoptions-builder-org-elasticsearch-client-requestoptions-builder-removeheader-java-lang-string/335467/10 "2023-06-08T07:32:58Z")
> the rest-client downloaded via the lib is 7.5
No. It's not the lib. It's probably a problem with the spring parent.
So you should "force" the low level client:
```auto
org.elasticsearch.client
elasticsearch-rest-client
8.8.0
```
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2023, 7:32am UTC](https://discuss.elastic.co/t/elasticsearch-8-client-is-giving-error-the-following-method-did-not-exist-org-elasticsearch-client-requestoptions-builder-org-elasticsearch-client-requestoptions-builder-removeheader-java-lang-string/335467/11 "2023-07-06T07:32:59Z")
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