plugin has customizer isssue

after enabling your plugin i am not able to go into customizer section of my flatsome theme. i tried by disabling each and every plugin one by one after tht i am saying this.
error i get- https://drive.google.com/open?id=1VkRGFdzvIzIbsEvlRR4S34_npcHrVSBI
please look into it.

The page I need help with: [log in to see the link]