500 Internal server Error - Baisc auth on kibana using nginx

The Kibana server logs should provide more information on the version conflicts if any. Plz check that . By default, Kibana logs to stdout . You can take a look at the configuration settings to see how you can change this to log to a file. Pleas see this version compatibility chart for more information on how the Kibana and Elasticsearch version numbers interact.

Rashmi