=== SIMPLE VALUE EXCHANGE DEMO ===

<br />
<b>Fatal error</b>:  Uncaught Error: Class 'SharedToken' not found in /var/www/htdocs/SURF_2026-05-Penalty/Dev/branches/test.php:17
Stack trace:
#0 {main}
  thrown in <b>/var/www/htdocs/SURF_2026-05-Penalty/Dev/branches/test.php</b> on line <b>17</b><br />