Elastic Beanstalk

I was trying to deploy my app to beanstalk but i am getting this error.

2018-02-21T05:49:22.5321888Z ##[section]Starting: Deploy to Elastic Beanstalk: vsts
2018-02-21T05:49:22.5325662Z ==============================================================================
2018-02-21T05:49:22.5325957Z Task : AWS Elastic Beanstalk Deploy Application
2018-02-21T05:49:22.5326257Z Description : Deploys an application to Amazon EC2 instance(s) using AWS Elastic Beanstalk
2018-02-21T05:49:22.5326509Z Version : 1.0.20
2018-02-21T05:49:22.5326887Z Author : Amazon Web Services
2018-02-21T05:49:22.5327258Z Help : Please refer to [AWS Elastic Beanstalk User Guide](https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/Welcome.html) for more details on deploying applications with AWS Elastic Beanstalk.
2018-02-21T05:49:22.5327629Z ==============================================================================
2018-02-21T05:49:23.0124021Z 698b99eb-678e-49f8-9588-6e2ad2b08389 exists true
2018-02-21T05:49:23.0130606Z Configuring task to use role-based credentials.
2018-02-21T05:49:23.0150110Z Deployment type set to aspnet
2018-02-21T05:49:24.3141877Z DescribeApplications: error vsts returned querying for existence of application CredentialsError: Missing credentials in config
2018-02-21T05:49:24.3146559Z ##[error]Error: Application vsts does not exist
2018-02-21T05:49:24.3247035Z ##[section]Finishing: Deploy to Elastic Beanstalk: vsts

Although i have vsts application ready in my aws account. How to fix this?

Start with the AWS Elastic Beanstalk User Guide and the Azure DevOps AWS Elastic Beanstalk Deploy Application task details shown in the report. Reproduce the credential failure and determine what configuration prevents the existing application from being found; done means the deployment task can query and deploy to the reported vsts application.

Written by the indexing model from the issue text.