Requests are not working php laravel

I have served a php laravel application via nginx on Ubuntu 18.04 server. This application was working perfectly on a plesk server. I made it work on digital ocean but the problem is that my apis are not receiving any data in the request. When ever I send a request to an api it has a null value in the variable $request of type Request. It is working on a shared server on plesk but not on digital ocean. What can be the problem. Thanks.