pac fails open ssh rdp....

I use pac on deepin 15.04;
bug pac doesn't open any shell.

vast@vast-PC:~$ perl -d /usr/bin/pac

Loading DB routines from perl5db.pl version 1.51
Editor support available.

Enter h or 'h h' for help, or 'man perldebug' for more help.

Gtk-WARNING **: cannot open display: at /usr/lib/x86_64-linux-gnu/perl5/5.26/Gtk2.pm line 126.
at /usr/lib/x86_64-linux-gnu/perl5/5.26/Gtk2.pm line 126.
Gtk2::ANON/usr/lib/x86_64-linux-gnu/perl5/5.26/Gtk2.pm:127 called at /usr/lib/x86_64-linux-gnu/perl5/5.26/Gtk2.pm line 168
Gtk2::import("Gtk2", "-init") called at /opt/pac/lib/PACUtils.pm line 47
PACUtils::BEGIN() called at /opt/pac/lib/PACUtils.pm line 47
eval {...} called at /opt/pac/lib/PACUtils.pm line 47
require PACUtils.pm called at /opt/pac/lib/PACMain.pm line 49
PACMain::BEGIN() called at /opt/pac/lib/PACUtils.pm line 47
eval {...} called at /opt/pac/lib/PACUtils.pm line 47
require PACMain.pm called at /usr/bin/pac line 62
main::BEGIN() called at /opt/pac/lib/PACUtils.pm line 47
eval {...} called at /opt/pac/lib/PACUtils.pm line 47