You will probably need to configure Apache to redirect you to the Elasticsearch port when the request is /_analyze. I suggest you check if you can access that page using the Elasticsearch port and then configure Apache properly.
If you want us to review your configuration, we have a Support Tool that will gather relevant information for us to analyze your configuration and logs. Could you please download and execute it on the machine where the stack is running by following the steps described in the guide below?
How to Run the Bitnami Support Tool
Please note that you need to paste the code outputted by the tool in your reply.