# Cannot evaluate org.elasticsearch.action.index.IndexResponse.toString()
**URL:** https://discuss.elastic.co/t/cannot-evaluate-org-elasticsearch-action-index-indexresponse-tostring/150445
**Category:** Elasticsearch
**Created:** [September 30, 2018, 2:54am UTC](https://discuss.elastic.co/t/cannot-evaluate-org-elasticsearch-action-index-indexresponse-tostring/150445 "2018-09-30T02:54:45Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Dav](https://discuss.elastic.co/u/Dav)
#### Post date: [September 30, 2018, 2:54am UTC](https://discuss.elastic.co/t/cannot-evaluate-org-elasticsearch-action-index-indexresponse-tostring/150445/1 "2018-09-30T02:54:45Z")
When using elasticsearch 6.4.1, I got the error:
Method threw 'java.lang.NoClassDefFoundError' exception. Cannot evaluate org.elasticsearch.action.index.IndexResponse.toString() in the IndexResponse.
And I used RestHighLevelClient, has anybody came across this? How did you solved this?
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### Author:  [@Dav](https://discuss.elastic.co/u/Dav)
#### Post date: [October 2, 2018, 1:16pm UTC](https://discuss.elastic.co/t/cannot-evaluate-org-elasticsearch-action-index-indexresponse-tostring/150445/2 "2018-10-02T13:16:51Z")
I have solved this problem and answer it on stackoverflow, here is the link: [https://stackoverflow.com/questions/52574308/cannot-evaluate-org-elasticsearch-action-index-indexresponse-tostring/52575105#52575105](https://stackoverflow.com/questions/52574308/cannot-evaluate-org-elasticsearch-action-index-indexresponse-tostring/52575105#52575105)
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [October 30, 2018, 1:17pm UTC](https://discuss.elastic.co/t/cannot-evaluate-org-elasticsearch-action-index-indexresponse-tostring/150445/3 "2018-10-30T13:17:12Z")
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