Lambda错误未在步骤函数中返回

Question

我使用异步模块创建了节点lambda函数，并将其附加到step函数。我的lambda如下所示

 exports.handler = function (event, context,callback) {
  var record =event   
       async.series(
       [
           function (callback) {
               SomeErrorFunction(record, callback);
           }  

       ],
       function (err, results) {
           if (err){

                function LogError(message) {
                this.name = "CustomError";
                  this.message = message;

             }
             LogError.prototype = new Error();

            var error = new LogError('There is an error');
          console.log('error is  ->  ' + JSON.stringify(error));


               callback(error)
           }

           else {
               console.log('RESULT ->  ' + results);                         
               callback(null,record)
           }
       });

};

我的脚步是这样的

"MyLambda": {
"Type": "Task",
"Resource": "arn:aws:lambda:eu-west-1:12345678:function:MyLambda",     
 "Next": "MyNextLambda",
    "Catch": [ {
        "ErrorEquals": ["States.ALL"],
        "ResultPath": "$",
        "Next": "LogError"
     } ]
},

我的问题是出现错误时，错误详细信息不会返回到步骤功能。我可以从console.log（'错误是->'+ JSON.stringify（错误））中看到结果；在coludwatch中。但是回调（错误）不会在步骤中返回。相反，步进功能会显示以下消息

{
 "error": "Lambda.Unknown",
 "cause": "The cause could not be determined because Lambda did not return an error type."
}