<ev> can't enqueue event ``_signal'' for nonexistent session POE::Kernel=ARRAY(0
x21cba28)
        POE::Kernel::_data_ev_enqueue('POE::Kernel=ARRAY(0x21cba28)', 'POE::Kern
el=ARRAY(0x21cba28)', 'POE::Kernel=ARRAY(0x21cba28)', '_signal', 16, 'ARRAY(0x21
15de8)', 'C:/Perl/site/lib/POE/Loop/Tk.pm', 61, ...) called at C:/Perl/site/lib/
POE/Loop/Tk.pm line 60
        POE::Kernel::_loop_signal_handler_generic('INT') called at C:/Perl/site/
lib/Tk.pm line 340
        Tk::MainLoop() called at test.pl line 864