User unable to close their Raised tickets

i have created a website and added a ticket system to as a button where anyone can raise a ticket who is authorized with there email id when they are trying to close a ticket below fallowing error is occurs please help to solve this problem remove solved button from ticket.

Access to this page this way (POST method or GET with a sensible value for ‘action’ parameter) is refused by CSRF protection in main.inc.php. Token not provided. If you access your server behind a proxy using url rewriting and the parameter is provided by caller, you might check that all HTTP header are propagated (or add the line $dolibarr_nocsrfcheck=1 into your conf.php file or MAIN_SECURITY_CSRF_WITH_TOKEN to 0 instead of 2 into setup).

Recommended:
In your form you should have

print '<input type="hidden" name="token" value="' . newToken() . '">';

Not recommended (but also works)
Or in Dolibarr go to Home > Setup > Other and add parameter MAIN_SECURITY_CSRF_WITH_TOKEN with value 0