Hi Debashish,
There is a module available in the Marketplace: https://marketplace.mendix.com/link/component/159 to read application logs into your application.
KR, Jurre
You’d need to look at the built in upload functionality, and when uploaded use a module like CSV (from the App Store) to break it into lines and individual components. You can then use these values to build up entities that you can display on screen using a Data Grid.
Good luck!