Global symbol "$undeclared_variable" requires explicit package name (did you forget to declare "my $undeclared_variable"?) at perl_bad_error_msg.pl line 9.
Type of arg 1 to List::Util::any must be block or sub {} (not reference constructor) at perl_bad_error_msg.pl line 14, near "qw(some options or whatever)) "
Execution of perl_bad_error_msg.pl aborted due to compilation errors.