We are having a problem with this form: http://www.adelaidefringe.com.au/participate/arts-industry/register that is happening across browsers intermittently.
We are getting the following fatal error:
Fatal error: Call to undefined method Services_JSON::encodeUnsafe() in /cust-web/k/f/K4039859/sites/www.adelaidefringe.com.au/html/wp-includes/compat.php on lin 73
The problem appears to be the Gravity Forms plugin defines the same class used by wordpress, except its an older version of the file and is missing the encodeUnsafe() method.
Location of wordpress class:
wp-includes/class-json.php
Location of the gravity forms class:
wp-content/plugins/gravityforms/json.php
Thanks,
Peta.