servant.rb in nats-rpc-0.2.1

- old
+ new

@@ -55,9 +55,10 @@
           end
           block_call_stopped_at = Time.now
 
           if block_call_exception
             err_msg = error_message(2.0, {
+              exception: block_call_exception.class.name,
               message: block_call_exception.message,
               backtrace: block_call_exception.backtrace
             })
 
             return @nats.publish reply, err_msg