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尝试运行以下代码时出现以下错误。我的目标是删除User和Item表中的所有项目。用户和项目对应Dynamoose型号。Uncaught NetworkingError：无法读取未定义的属性“替换”错误
for循环运行正常。但是scan（）。exec回调函数根本没有运行，并且抛出了以下错误。
CircleCI真的很奇怪，这个问题不会发生。它只发生在我的本地计算机上。我尝试删除node_modules并运行npm install而没有运气。如果我删除下面的代码，它也可以正常工作。
任何想法？甚至在哪里开始调试呢？
代码：
var dbarray = [User, Item];
for (var i = 0; i < dbarray.length; i++) {
dbarray[i].scan().exec(function(err, items) {
if (err) {
throw err;
}
items.forEach(function(item, key) {
item.delete();
});
});
}
错误：
General
1) "before each" hook
0 passing (10s)
1 failing
1) "before each" hook:
Uncaught NetworkingError: Cannot read property 'replace' of undefined
at findTargetPort (node_modules/zombie/lib/reroute.js:50:28)
at Socket.Net.Socket.connect (node_modules/zombie/lib/reroute.js:69:18)
at Agent.connect [as createConnection] (net.js:106:35)
at Agent.createSocket (_http_agent.js:217:26)
at Agent.addRequest (_http_agent.js:187:10)
at new ClientRequest (_http_client.js:272:16)
at Object.request (http.js:39:10)
at features.constructor.handleRequest (node_modules/aws-sdk/lib/http/node.js:42:23)
at executeSend (node_modules/aws-sdk/lib/event_listeners.js:304:29)
at Request.SEND (node_modules/aws-sdk/lib/event_listeners.js:318:9)
at Request.callListeners (node_modules/aws-sdk/lib/sequential_executor.js:101:18)
at Request.emit (node_modules/aws-sdk/lib/sequential_executor.js:77:10)
at Request.emit (node_modules/aws-sdk/lib/request.js:683:14)
at Request.transition (node_modules/aws-sdk/lib/request.js:22:10)
at AcceptorStateMachine.runTo (node_modules/aws-sdk/lib/state_machine.js:14:12)
at node_modules/aws-sdk/lib/state_machine.js:26:10
at Request.<anonymous> (node_modules/aws-sdk/lib/request.js:38:9)
at Request.<anonymous> (node_modules/aws-sdk/lib/request.js:685:12)
at Request.callListeners (node_modules/aws-sdk/lib/sequential_executor.js:115:18)
at callNextListener (node_modules/aws-sdk/lib/sequential_executor.js:95:12)
at node_modules/aws-sdk/lib/event_listeners.js:220:9
at finish (node_modules/aws-sdk/lib/config.js:315:7)
at node_modules/aws-sdk/lib/config.js:333:9
at Credentials.get (node_modules/aws-sdk/lib/credentials.js:126:7)
at getAsyncCredentials (node_modules/aws-sdk/lib/config.js:327:24)
at Config.getCredentials (node_modules/aws-sdk/lib/config.js:347:9)
at Request.SIGN (node_modules/aws-sdk/lib/event_listeners.js:192:22)
at Request.callListeners (node_modules/aws-sdk/lib/sequential_executor.js:101:18)
at Request.emit (node_modules/aws-sdk/lib/sequential_executor.js:77:10)
at Request.emit (node_modules/aws-sdk/lib/request.js:683:14)
at Request.transition (node_modules/aws-sdk/lib/request.js:22:10)
at AcceptorStateMachine.runTo (node_modules/aws-sdk/lib/state_machine.js:14:12)
at node_modules/aws-sdk/lib/state_machine.js:26:10
at Request.<anonymous> (node_modules/aws-sdk/lib/request.js:38:9)
at Request.<anonymous> (node_modules/aws-sdk/lib/request.js:685:12)
at Request.callListeners (node_modules/aws-sdk/lib/sequential_executor.js:115:18)
at Timeout.callNextListener [as _onTimeout] (node_modules/aws-sdk/lib/sequential_executor.js:95:12)