经过艰苦的努力，我发现每次使用

After so much of struggle, I figured out that I was creating new Cognito user every time using

poolData = {
    UserPoolId: "XXXXXXXXXXXXXXXXX",
    ClientId: "XXXXXXXXXXXXXXXXXXXXXXXX"
};
userPool: CognitoUserPool = new CognitoUserPool(this.poolData);

因此，每当我这样称呼时，都会创建一个新的认知用户.因此，对此的更改密码无效.

So, whenever I call this, a new cognito-user is created. So, change-password on this was not working.

当我创建一个通用函数来访问 cognitoUser 并在各处使用该函数时，对我来说是可行的.

When I created a common function to access cognitoUser and using the same everywhere worked for me.

谢谢...