Deleted app '?' icon in Dock I deleted an app from the Applications folder. However the original app icon in the Dock is now appearing as a '?'. I am unable to delete this icon from the dock, when I click to get the Options menu, I dont see any sub-items. I am unable to drag this icon into trash as well. Any ideas as to how this can be done?

Running Mojave: 10.14.3
Drag the icon off the dock (not into the trash) and hold it for a second until it says "Remove". Then drop the item and it should go away.