help!!! cart empty error

[cst3124]

After click add to cart and click review and checkout, the cart will remain empty only.
In background system error log.
OutOfRangeException:  (0)
 

#0 /mydata/www/wwwroot/xxx/applications/nexus/modules/front/store/cart.php(77): IPS\Patterns\_ActiveRecord::load(NULL)
#1 /mydata/www/wwwroot/xxx/system/Dispatcher/Controller.php(90): IPS\nexus\modules\front\store\_cart->quantities()
#2 /mydata/www/wwwroot/xxx/applications/nexus/modules/front/store/cart.php(40): IPS\Dispatcher\_Controller->execute()
#3 /mydata/www/wwwroot/xxx/system/Dispatcher/Dispatcher.php(152): IPS\nexus\modules\front\store\_cart->execute()
#4 /mydata/www/wwwroot/xxx/index.php(13): IPS\_Dispatcher->run()
#5 {main}

BACKTRACE
 

#0 /mydata/www/wwwroot/xxx/init.php(995): IPS\_Log::log('OutOfRangeExcep...', 'uncaught_except...')
#1 [internal function]: IPS\IPS::exceptionHandler(Object(OutOfRangeException))
#2 {main}

How can i fix it

[Stuart Silvester]

That stack trace suggests you've got some bad data in the cart/session.

Can you submit a ticket so we can look further into this?