I cant access to kura web UI. It gives me HTTP ERROR: 404 error.
Most probably you have installed Kura without web ui. (happened to me more than once)
In official download page look at the right column Kura 1.3.0 Extended Downloads, the description says
The below downloads contain the Kura Web UI, [...] These features, while released under Eclipse Public License, depend on third party libraries that cannot be distributed directly by Eclipse.
Download your required version (and Developer Workspace) from the right column and reinstall Kura with web ui.
If you already have the version with web ui, posting your /var/log/kura.log
and /var/log/kura-console.log
might help finding the error.