修复路由不存在时的报错

package.json

@@ -1,6 +1,6 @@
 {
   "name": "wkitd",
-  "version": "1.3.7",
+  "version": "1.3.8",
   "type": "module",
   "main": "dist/index.js",
   "files": [

src/router/router-engine.js

@@ -156,7 +156,7 @@ class Router {
     $view.current = route.name
     this.#route = route
 
-    if (typeof table.component === 'function') {
+    if (table && typeof table.component === 'function') {
       if (!customElements.get(route.name)) {
         table.component()
         delete table.component //避免多次请求