It seems that TOR is already running. Try to check tor status by running following command in terminal:
sudo service tor status
If it returns "tor is running", then tor is running.
1- try to start tor as super user
2- try to provide another config file
On the upper right of the Tor Browser click on the 3 small horizontal bars, select "Preferences", on the bottom of the new window under "Network Proxy" click on "Settings" and you will get to the "Network settings/proxy settings for internet access" (Impostazioni di connessione/Configurazione dei proxy per l'accesso a internet).