Problem after elasticsearch upgrade to 6.0

Elastic Stack Elasticsearch
1

Hello,

First I must say that I'm totally noob with Elasticsearch, so please take my apologies if this is basic question.

After upgrading elasticsearch on my server to 6.0 version my site breaks.

Can someone please tell me what is wrong and what I need to do?

Thanks!

2

All requests with bodies must send a valid content-type header. The error message is telling you that you’re not sending a valid non-empty content-type header.