Backend changes separating id from pilot_id

app/Exceptions/UserPilotIdExists.php

@@ -0,0 +1,9 @@
+<?php
+
+namespace App\Exceptions;
+
+class UserPilotIdExists extends InternalError
+{
+    public const FIELD = 'pilot_id';
+    public const MESSAGE = 'A user with this pilot ID already exists';
+}