# I upgraded elasticsearch to 7.8.0 version but I got "java.lang.NoClassDefFoundError: Could not initialize class org.elasticsearch.http.netty4.Netty4HttpServerTransport" error
**URL:** https://discuss.elastic.co/t/i-upgraded-elasticsearch-to-7-8-0-version-but-i-got-java-lang-noclassdeffounderror-could-not-initialize-class-org-elasticsearch-http-netty4-netty4httpservertransport-error/239621
**Category:** Elasticsearch
**Tags:** language-clients
**Created:** [July 2, 2020, 11:16am UTC](https://discuss.elastic.co/t/i-upgraded-elasticsearch-to-7-8-0-version-but-i-got-java-lang-noclassdeffounderror-could-not-initialize-class-org-elasticsearch-http-netty4-netty4httpservertransport-error/239621 "2020-07-02T11:16:00Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@aysnur](https://discuss.elastic.co/u/aysnur)
#### Post date: [July 2, 2020, 11:16am UTC](https://discuss.elastic.co/t/i-upgraded-elasticsearch-to-7-8-0-version-but-i-got-java-lang-noclassdeffounderror-could-not-initialize-class-org-elasticsearch-http-netty4-netty4httpservertransport-error/239621/1 "2020-07-02T11:16:00Z")
I upgraded elasticsearch to 7.8.0 version
my dependencies like
```
`
org.elasticsearch
elasticsearch
7.8.0
org.elasticsearch
elasticsearch-core
7.8.0
org.elasticsearch.client
x-pack-transport
7.8.0
org.apache.lucene
lucene-core
8.5.1
`
```
Could you please help me how can I solve this problem.
---
### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [July 2, 2020, 11:35am UTC](https://discuss.elastic.co/t/i-upgraded-elasticsearch-to-7-8-0-version-but-i-got-java-lang-noclassdeffounderror-could-not-initialize-class-org-elasticsearch-http-netty4-netty4httpservertransport-error/239621/2 "2020-07-02T11:35:45Z")
Welcome!
Are you using spring by any chance?
---
### Author:  [@aysnur](https://discuss.elastic.co/u/aysnur)
#### Post date: [July 2, 2020, 11:49am UTC](https://discuss.elastic.co/t/i-upgraded-elasticsearch-to-7-8-0-version-but-i-got-java-lang-noclassdeffounderror-could-not-initialize-class-org-elasticsearch-http-netty4-netty4httpservertransport-error/239621/3 "2020-07-02T11:49:39Z")
I am using enterprise java beans with weblogic
---
### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [July 2, 2020, 2:32pm UTC](https://discuss.elastic.co/t/i-upgraded-elasticsearch-to-7-8-0-version-but-i-got-java-lang-noclassdeffounderror-could-not-initialize-class-org-elasticsearch-http-netty4-netty4httpservertransport-error/239621/4 "2020-07-02T14:32:37Z")
Are you using the transport client or the rest client? You should use the rest client.
---
### Author:  [@aysnur](https://discuss.elastic.co/u/aysnur)
#### Post date: [July 2, 2020, 2:59pm UTC](https://discuss.elastic.co/t/i-upgraded-elasticsearch-to-7-8-0-version-but-i-got-java-lang-noclassdeffounderror-could-not-initialize-class-org-elasticsearch-http-netty4-netty4httpservertransport-error/239621/5 "2020-07-02T14:59:01Z")
I am using x-pack-transport I am quite new in Elastic search. Actually I just upgraded from 7.6.2 version . We cannot switch to rest client right now. Is there any possibility to solve this in this manner?
---
### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [July 2, 2020, 4:13pm UTC](https://discuss.elastic.co/t/i-upgraded-elasticsearch-to-7-8-0-version-but-i-got-java-lang-noclassdeffounderror-could-not-initialize-class-org-elasticsearch-http-netty4-netty4httpservertransport-error/239621/6 "2020-07-02T16:13:12Z")
What is your full `pom.xml`? Could your reproduce the problem with a sample project?
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 30, 2020, 4:13pm UTC](https://discuss.elastic.co/t/i-upgraded-elasticsearch-to-7-8-0-version-but-i-got-java-lang-noclassdeffounderror-could-not-initialize-class-org-elasticsearch-http-netty4-netty4httpservertransport-error/239621/7 "2020-07-30T16:13:23Z")
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