Please format your code, logs or configuration files using </> icon as explained in this guide and not the citation button. It will make your post more readable.
Or use markdown style like:
```
CODE
```
This is the icon to use if you are not using markdown format:
There's a live preview panel for exactly this reasons.
Lots of people read these forums, and many of them will simply skip over a post that is difficult to read, because it's just too large an investment of their time to try and follow a wall of badly formatted text.
I updated your post.
Didn't you see this?
We can not start Elasticsearch Client. Exiting.java.lang.RuntimeException: The Elasticsearch client version [7] is not compatible with the Elasticsearch cluster version [6.6.1].
You need to download the right version as the documentation says:
