chore: output console error for invalid route component (#5593)

packages/utils/src/helpers/generate-routes-backend.ts

@@ -56,12 +56,14 @@ function convertRoutes(
       // 页面组件转换
     } else if (component) {
       const normalizePath = normalizeViewPath(component);
-      route.component =
-        pageMap[
-          normalizePath.endsWith('.vue')
-            ? normalizePath
-            : `${normalizePath}.vue`
-        ];
+      const pageKey = normalizePath.endsWith('.vue')
+        ? normalizePath
+        : `${normalizePath}.vue`;
+      if (pageMap[pageKey]) {
+        route.component = pageMap[pageKey];
+      } else {
+        console.error(`route component is invalid: ${pageKey}`, route);
+      }
     }
 
     return route;