Each time I try to use window.close(); I just get the error Scripts may only close the windows that were opened by them, is there any way to bypass this?
Looks like it’s not.
See the documentation:
This method can only be called on windows that were opened by a script using the
Window.open()method. If the window was not opened by a script, an error similar to this one appears in the console: Scripts may not close windows that were not opened by script.
See also window.close and self.close do not close the window in Chrome.