Warning messages such as the following:
;>>> Add this combination to the template file <<<
((1 NIL) NIL (_CALL-METHOD_))) ;
occur when a method combination required by a particular function call is not available. You can eliminate these warnings either by compiling the method combination template forms output in the message and loading them into the image before delivery, or by using the keyword :warn-on-missing-templates. See Finding the necessary templates and Incorporating the templates into the application.
LispWorks Delivery User Guide - 10 Aug 2017