获取未捕获的类型错误:无法使用“in”运算符搜索“length”in

我想自动将从IMDB中提取的类型添加到我的类别中。 我制作了JSON代码来为我做到这一点。

    $('input[name=Checkbx]').click(function() {
    var coc = $('input[name=Checkbx2]').get(0).value;
    // Send Request
    $.getJSON("http://www.omdbapi.com/?i=" + coc + "&plot=short&r=json", function(data) {
        var valDir = "";
        var valWri = "";
        var valAct = "";    
        $.each(data, function(key, val) {
              $('input[name=' +key+ ']').val(val); 
              if(key == "Director"){
                valDir+= " "+val+",";
              }   
if(key == "Genre"){
            var genr = "";
            $.each( data.Genre, function( key, val ) {
                genr += "" + val + ", ";
                genr1 = val;
                $('input[name=newcategory]').val( genr1 );
                $('#category-add-submit').trigger('click');
                 $('#category-add-submit').prop("disabled", false);
                $('input[name=newcategory]').val("");
            });
            $('input[name=' +key+ ']').val( genr );
        }
              if(key == "Actors"){
                valAct+= " "+val+",";
              }
              if(key == "Year"){
                $('#new-tag-<?php echo get_option('year'); ?>').val(val);
              }
              if(key == "Country"){
                $('#new-tag-movie-country').val(val);
              }
        });
        $('#new-tag-<?php echo get_option("director"); ?>').val(valDir);
        $('#new-tag-<?php echo get_option("actor"); ?>').val(valAct);
    }); 
});

郑重声明：我正在使用 omdbapi.com API 从 IMDB 获取数据，我的电影 ID 用于测试tt0111161，JSON 输出为：

{"Title":"The Shawshank Redemption","Year":"1994","Rated":"R","Released":"14 Oct 1994","Runtime":"142 min","Genre":"Crime, Drama","Director":"Frank Darabont","Writer":"Stephen King (short story '"Rita Hayworth and Shawshank Redemption'"), Frank Darabont (screenplay)","Actors":"Tim Robbins, Morgan Freeman, Bob Gunton, William Sadler","Plot":"Two imprisoned men bond over a number of years, finding solace and eventual redemption through acts of common decency.","Language":"English","Country":"USA","Awards":"Nominated for 7 Oscars. Another 14 wins & 20 nominations.","Poster":"http://ia.media-imdb.com/images/M/MV5BODU4MjU4NjIwNl5BMl5BanBnXkFtZTgwMDU2MjEyMDE@._V1_SX300.jpg","Metascore":"80","imdbRating":"9.3","imdbVotes":"1,610,411","imdbID":"tt0111161","Type":"movie","Response":"True"}

一切正常。 我的意思是演员、导演和演员是自动添加的。 我的问题是流派。

我有这个错误：

Uncaught TypeError: Cannot use 'in' operator to search for 'length' in Crime, Drama

我的 JQuery 版本是 2.2.1。 我该如何解决这个问题？