Fixed double render error

app/controllers/application_controller.rb

@@ -28,8 +28,10 @@ class ApplicationController < ActionController::API
 
   rescue_from Exception do |exception|
     logger.fatal exception
-    logger.fatal exception.backtrace.first(5).join("\n")
-    render status: :internal_server_error
+    logger.fatal exception.backtrace.first(10).join("\n")
+    unless response_body
+      render status: :internal_server_error
+    end
   end
 
   # check if client application is allowed to consumes the API.