If the user tries to login but does not supply correct credentials, there should be a notification to inform the user that authentication with the provided username and password was not successful.
Implemented a Toast as a fix. We can't be sure that the error is because the user doesn't exist or something else. So in an exceptional situation the error message will be misleading.
If the user tries to login but does not supply correct credentials, there should be a notification to inform the user that authentication with the provided username and password was not successful.