A PHP Error was encountered

Severity: Notice

Message: Undefined variable: ref_id

Filename: home/sign-in.php

Line Number: 86

Backtrace:

File: /home/domeny/om/konto.p24.pl/public_html/application/views/home/sign-in.php
Line: 86
Function: _error_handler

File: /home/domeny/om/konto.p24.pl/public_html/application/controllers/Users.php
Line: 109
Function: view

File: /home/domeny/om/konto.p24.pl/public_html/index.php
Line: 315
Function: require_once