incorrect username takes us to map

hi, in this app if we accidentally use invalid username and passwords then it lands up to the map. though we don't see the devices, the progress bar keeps on rolling, and after that when we do the login with correct credentials, then devices not show immediately, it takes too much time and sometimes it don't show at all,

solution to this is to keep validation to login , if there is invalid login then there should be error and we should stay on login page itself,

so i want to ask ,can you provide api(name) and parameter? so that i can implement in my manager app

Thanks
-Amol

I plan to implement it in the next version of Traccar Manager.

As for API, documentation for it is available here:

https://www.traccar.org/traccar-api/