From the logs you posted, it appears the Optimization process is still running. This can take several minutes depending on the resources available on your machine (it's quite memory and CPU intensive).
This process only needs to run if you install or disable any plugins. Once it's been run it will not need to run again unless you install or disable additional plugins.
nothing shows me in browser
Do you see the Kibana loading screen or is it a blank page? If it's a blank page, can you run this and post the results:
$ curl -v http://localhost:5601