Dialogflow Node.js捕获错误的凭据错误

Question

当我输入错误的凭据时，我想从google auth中捕获错误。即使我尝试捕获该错误，它也只会输出意外的承诺拒绝。

我的代码：

const dialogflow = require('dialogflow');
async function listIntents(config){
    try{
        const intentClient = new dialogflow.IntentsClient(config);
    }
    catch(error){
        console.log("Error Caught")
    }

}
listIntents('dfdff');

错误输出：

UnhandledPromiseRejectionWarning: Error: Could not load the default credentials. Browse to https://cloud.google.com/docs/authentication/getting-started for more information.
    at GoogleAuth.<anonymous> (C:\Users\Hein\Desktop\telegram-bot-home\node_modules\google-auth-library\build\src\auth\googleauth.js:168:23)
    at Generator.next (<anonymous>)
    at fulfilled (C:\Users\Hein\Desktop\telegram-bot-home\node_modules\google-auth-library\build\src\auth\googleauth.js:19:58)
    at process._tickCallback (internal/process/next_tick.js:68:7)