Unable to init server: Could not connect: Connection refused (exo-helper-1:27593): Gtk-WARNING **: cannot open display:

Usage: exo-helper-1 [OPTION?] Help Options: -h, --help Show help options --help-all Show all help options --help-gtk Show GTK+ Options Application Options: -V, --version Print version information and exit -c, --configure Open the Preferred Applications configuration dialog -s, --socket-id=SOCKET ID Settings manager socket -l, --launch=TYPE [PARAMETER] Launch the default helper of TYPE with the optional PARAMETER, where TYPE is one of the following values. -q, --query=TYPE [PARAMETER] Query the default helper of TYPE, where TYPE is one of the following values. --display=DISPLAY X display to use The following TYPEs are supported for the --launch and --query commands: WebBrowser - The preferred Web Browser. MailReader - The preferred Mail Reader. FileManager - The preferred File Manager. TerminalEmulator - The preferred Terminal Emulator.