don't look for template for source files without extension

render.rkt

@@ -191,8 +191,8 @@
                           (let ([source-metas (cached-require source-path 'metas)])
                             (and ((->symbol world:template-meta-key) . in? . source-metas)
                                  (build-path source-dir (select-from-metas (->string world:template-meta-key) source-metas))))) ; path based on metas
-                        (build-path (world:current-project-root) 
-                                    (add-ext world:default-template-prefix (get-ext (->output-path source-path))))))) ; path to default template
+                        (and (filename-extension (->output-path source-path)) (build-path (world:current-project-root) 
+                                    (add-ext world:default-template-prefix (get-ext (->output-path source-path)))))))) ; path to default template
         (build-path (world:current-server-extras-path) world:fallback-template)))) ; fallback template