VERIFY-Callback-Express sample app issue starting

[mesujith123]

I get following Message when i try to run the app:

Server started on port 2000 Ngrok statusCode: 200 Creating Presentation Request at https://visa-cyflnq.vii.mattr.global/core/v1/presentations/requests (node:15448) UnhandledPromiseRejectionWarning: HTTPError: Response code 400 (Bad Request) at Request. (C:\Users\sujith\sample-apps\verify-callback-express\node_modules\got\dist\source\as-promise\index.js:117:42) at processTicksAndRejections (internal/process/task_queues.js:97:5) (node:15448) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag --unhandled-rejections=strict (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1) (node:15448) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.