无法定义ajax,DataTables Ajax请求-无法读取未定义的属性“长度”

我正在将DataTables与AJAX端点一起使用,当我在站点上初始化数据表时,我不断收到错误消息,提示“无法读取未定义的属性'length'”。我试图使此代码有效,但没有效果

请求的json结果

{

"data": [

{

"id": "28",

"id_transakcji": "xxxxxxxxxxxxxxxxx",

"kod": "xxxxxxxxxxxxxxxxxxxxx",

"id_kodu": "xxx",

"email": "xxxxxxxxxx@o2.pl",

"status": "W Toku",

"xxyy": "10",

"xxyya": "xxxxxxx",

"xxaa": "xxxxxxx",

"xxx": "xxxxxxxxx",

"data_utworzenia": "2019-05-01 20:51:31"

},

{

...

该数据表的配置

var mytable = jQuery('#Transactions').dataTable( {

ajax: {

url: '<?php echo admin_url( 'admin-ajax.php' ) ?>',

type: 'POST',

data: {action:'get_transactions'},

dataSrc: ''

}

columns: [

{"data": "id"},

{"data": "id_transakcji"},

{"data": "kod"},

{"data": "id_kodu"},

{"data": "email"},

{"data": "status"},

{"data": "xxyy"},

{"data": "xxyya"},

{"data": "xxaa"},

{"data": "xxx"},

{"data": "data_utworzenia"}

]

} );

表的HTML

IDID TransakcjiKodID KoduEmailstatusxxyyxxyyaxxaaxxxdata_utworzenia

IDID TransakcjiKodID KoduEmailstatusxxyyxxyyaxxaaxxxdata_utworzenia

有人知道为什么会这样吗?

谢谢

威克多