Thread 15 terminated abnormally: Can't call method "scheme" on an undefined value at C:/Perl/lib/HTTP/Cookies.pm line 44.

my $ua = LWP::UserAgent->new();
   $ua->proxy([qw(http https)] => 'socks://'.$socks);
   $ua->agent(agent());
   $ua->timeout($timeout);
my $c0 = HTTP::Cookies->new();
   $ua->cookie_jar($c0);