hi Jorge,
Which HANA instance are you using (Single DB or MDC)?
If you are using single DB then:
1. Login as SIDADM user
2. Stop the HANA DB: HDB stop
3. Then start name server: exe/hdbnameserver &
4. Start compile server: exe/hdbcompileserver &
5. Start index server: exe/hdbindexserver -resetSystemUser
It will prompt you for password reset-> give the password
Now kill the process of compile server: kill -15 <PID>
kill the process of name server : kill -15 <PID>
Start the HANA instance: HDB start
I was facing the same issue, actually I forgot to start the compile server, because of it this issue happened.
Before staring indexserver, compile server should be up and running.
If the instance is MDC then you need to follow other procedure.
This will resolve your issue. 
Regards,
Ashish