my $var = LoadFile($fh) or warn/die "MESSAGE";

##</code><code>##

YAML Error: Inconsistent indentation level
   Code: YAML_PARSE_ERR_INCONSISTENT_INDENTATION
   Line: 21
   Document: 1
 at /usr/share/perl5/YAML/Loader.pm line 719

##</code><code>##

#!/usr/bin/env perl


use strict;
use Getopt::Long;
use YAML qw(LoadFile);
use Data::Dumper;

my $file;

GetOptions (
    "file=s" => \$file);

if ( $file ) { 
    $SIG{__DIE__} = sub { die("My error: ", @_); };
    $SIG{__WARN__} = sub { warn("My warning: ", @_); };

    open my $fh, '<', $file
        or die "Cannot open target file\n"; #THIS ERROR IS CATCHABLE

    my $config = LoadFile($fh)
        or warn("YAML parsing error\n"); #CANNOT CATCH ERROR
       #or warn "YAML parsing error\n"; #CANNOT CATCH ERROR
    print Dumper(\$config), "\n";
} else {
    die "Syntax: $0 [-f,--file] [YAML_FILE]";
}