Back4app main logs
You can get at Server Settings -> Logs -> Settings -> Server System Log.
Show the logs of console.log() and console.error() functions and all general logs of everything that happens with your app.
Parse Server logs
You can get at Dashboard -> Logs.
Show logs of request.log.info() and request.log.error() functions and all logs generated by Parse server.
We are working to consolidate both logs soon.