ASP .NET Core Developer Exception Page

configure.cs

 // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            app.UseRouting();

            app.UseEndpoints(endpoints =>
            {
                endpoints.MapGet("/", async context =>
                {
                    throw new Exception("Error Occurred while processing your request");
                    await context.Response.WriteAsync("Hello World!");
                });
            });
            if (env.IsDevelopment())
            {
                DeveloperExceptionPageOptions developerExceptionPageOptions = 
                                                        new DeveloperExceptionPageOptions
                {
                    SourceCodeLineCount = 10
                };
                app.UseDeveloperExceptionPage(developerExceptionPageOptions);
            }
           // app.UseFileServer();
        }