edit auth

src/emqx_auth_anonymous.erl

@@ -12,7 +12,7 @@ load() ->
 on_client_authenticate(#{username := Username, password := Password}, AuthResult) ->
     if
         (Username == undefined) and (Password == undefined) ->
-            {stop, AuthResult#{username => anonymous, auth_result => success, anonymous => false}};
+            {stop, AuthResult#{username => "anonymous", auth_result => success, anonymous => false}};
         true ->
             {ok, AuthResult}
     end.