InvalidSelectorError: invalid selector: Unable to locate an element with the xpath expression

Answer 1

This error message...

invalid or illegal selector was specified

...implies that the Locator Strategy you have constructed was not a valid locator.

To locate the element with text as Tile View you can use the following xpath :

"//a[@ng-click=\"nodes.setViewType('tiles',true)\"]"

Note : As the element is an Angular element to interact with it you have to induce a waiter for the element to be clickable.