diff --git a/plugins/monitor/monitor.c b/plugins/monitor/monitor.c
index 15bc4f56..271e8c69 100644
--- a/plugins/monitor/monitor.c
+++ b/plugins/monitor/monitor.c
@@ -409,6 +409,8 @@ static int monitor_plugin_request(neu_plugin_t *      plugin,
         handle_events(plugin, header->type, data);
         break;
     }
+    case NEU_REQ_UPDATE_LICENSE:
+        break;
     default:
         nlog_warn("recv unsupported msg: %s",
                   neu_reqresp_type_string(header->type));
diff --git a/plugins/restful/rest.c b/plugins/restful/rest.c
index 2ff95f9a..4cff6156 100644
--- a/plugins/restful/rest.c
+++ b/plugins/restful/rest.c
@@ -168,7 +168,7 @@ static int dashb_plugin_request(neu_plugin_t *      plugin,
 {
     (void) plugin;
 
-    if (nng_aio_get_input(header->ctx, 3)) {
+    if (header->ctx && nng_aio_get_input(header->ctx, 3)) {
         // catch all response messages for global config request
         handle_global_config_resp(header->ctx, header->type, data);
         return 0;