when i upgrade and i get error msg

[wanyun1021]

Fatal error: Class 'VNC_ExtendObject' not found in /home/muzartco/muz-station.com/core/engine/view.php on line 26
error: Class 'VNC_ExtendObject' not found in /home/muzartco/muz-station.com/core/engine/view.php on line 26

[wanyun1021]

hi , please help

[Basara]

Hello.

Make sure all your third party extensions can work with AbanteCart 1.2.11

Contact extension's developer https://marketplace.abantecart.com/vinacart