From Servoy 8.4 on, all client side messages from the browser's Console loggers (log (is send as info),error,info,warn,debug) will be send to the server and logged through the logger: org.sablo.BrowserConsole. By default this is not configured in the log4j.xml file so it logs WARN and ERROR messages from the browser. This could be adjusted by adding a logger:
by making it INFO you will see also Console.log and Console.info
You can also redirect this to a another file, see Websocket Message logging (for debug purposes) for another sample how to do that.