Question: I want to change the default login validation error message like:

```
Username & Password doesn't match

```

instead of

```
these credentials do not match our records

```

How to do this ?

Answer: 
You can change this message to another one in this file:

```
resources/lang/en/auth.php

```

This is the line:

```
'failed' => 'These credentials do not match our records.',

```
In `app/Http/controllers/Auth/LoginController` add below code:

```
protected function sendFailedLoginResponse(Request $request)
{
    throw ValidationException::withMessages([
           'username or password is incorrect!!!'
        ]);
}

```

In the `sendFailedLoginResponse` function you can redirect user to custom page or show error alert.