% if ( $c->stash->{errors} ) {
    <div style="margin-top: 2em" class="alert alert-danger" role="alert">
        There were errors with your request that could not be resolved:
        <ul>
%      for my $error ( @{$c->stash->{errors}} ) {
            <li><%= $error %></li>
%  } 
        </ul>
    </div>
%  }