I have a new DNN 9.1.1 site in which, since I clicked on the close button of the Edit bar, no longer allows me to enter page edit mode. When I click on the edit button, a script error is shown in the browser:
POST http://localhost/dnn9/en-gb/API/internalservices/controlBar/ToggleUserMode 500 ()
Can anyone tell me how to fix this please?