MaskLayer.js:399 Uncaught TypeError: (intermediate value).activate is not a function
[Detected 1 package: simplefog]
at SimplefogLayer.activate (modules/simplefog/classes/MaskLayer.js:399)
at SceneControls._onClickLayer (foundry.js:66647)
at HTMLLIElement.dispatch (jquery.min.js:2)
at HTMLLIElement.y.handle (jquery.min.js:2)
Error when I click the icon on the LHS: