TF-2387 Handle sign in SAAS platform

lib/features/login/domain/exceptions/authentication_exception.dart

@@ -44,4 +44,8 @@ class CanNotFoundPassword implements Exception {}
 
 class CanNotAuthenticationInfoOnWeb implements Exception {}
 
-class NotFoundAuthenticationInfoCache implements Exception {}
+class NotFoundAuthenticationInfoCache implements Exception {}
+
+class CanNotFoundSaasServerUrl implements Exception {}
+
+class SaasServerUriIsNull implements Exception {}