RESTClient Code not working in 2023 R2

hi @ramya15 ,

There are few changes in the Rest Sharp starting from v107 version.
Please go through the below link and adjust your code based on the changes.
https://restsharp.dev/v107/#reference.

Below is the sample code with POST which is working in 23R2. you refer this too.

                   var client = new RestClient();
                    var request = new RestRequest("<Url>", Method.Post);
                    request.AddHeader("Content-Type", "application/json");                   
                    request.AddHeader("Authorization", "Bearer pKfhKMxMrLsKcKvpMRi2dSbQPOzpxRdO");                    
                    var body = JsonConvert.SerializeObject(GetRequestObject());
                    request.AddJsonBody(body);
                    RestResponse response = client.Execute(request);