Error in form after footer defintion

Since today I got this error message:

Template Error: filename: file D:/Programme/NetMake/v9-php73/wwwroot/scriptcase/devel/conf/scriptcase/tpl/footer//nm_rodape.html does not exist.
Halted.

But the only thing what I did was to switch on the footer in the form/layout dedinition and it is not possible for me to select or enter something in Footer Variables

Hi, someone there who can help me with a good idea ?