Essential Grid (3.1.10) Fatal Error

[rbosenet]

Describe the bug
Fatal Error when Essential Grid 3.1.10 is installed

1. Install Essential Grid 3.1.10
2. Create and save a grid
3. Create a page, insert an essential grid element. Notice you can't select 2 in the element.
4. Save page. You will get a Fatal Error.

Uncaught Error: Call to undefined method Essential_Grid::get_essential_grids() in C:\Users\rajar\Local Sites\august\app\public\wp-content\uploads\visualcomposer-assets\elements\essentialGrid\essentialGrid\EssentialGridController.php:45

Expected behavior
No Fatal Error

[OlegApanovich]

https://github.com/VisualComposer/devElements/pull/442