:close in ex mode doesn't work

Hello Frank and list: one thing I guess is not working is :close in ex mode, here is the error I got from messages buffer. evil-ex-call-current-command: Wrong type argument: commandp, evil-window-close Wrong type argument: commandp, evil-window-close [5 times] looks like it is defined here: evil-maps.el:356:(evil-ex-define-cmd "close" 'evil-window-close) I also tried m-x evil-window-close but emacs didn't find this function. Thanks for any advice, Jim.